![Can I buy a stainless steel prostate chip? | Two models are on the current list [OK Prostate Chip]](/img/a/T0828/eyecatch.svg)
This page is based on entries from "ok-lab's diary" (https://ok-lab.hatenablog.com/), the Japanese development diary written by Mr. Okada, founder of OK Lab (Okada Comfortable Life Laboratory). Only the entries about "stainless steel chip sales" are summarized here, in order of publication. Past prices and sizes are as written at the time. Current prices come from the official product list (retrieved September 4, 2026). Quotations are translated from Japanese.
Note: This page is a personal reading log by someone with no connection to the maker or the seller. It reflects the source entries as of their publication dates and makes no guarantee of accuracy or safety. The product is not a medical device; talk to a doctor about any health decision. Check the official site for current information. This page contains advertising.
In short
- OK Lab, a small company in Japan, began stainless steel chip sales with limited trial batches.
- Mr. Okada introduced email reservations and completion checks to manage production difficulties.
- The current list names semi-long and Zoro stainless steel chips at ¥9,900 (about $63 at ¥156 = $1, rate as of 2026-09-04) each, tax included.
About this product
The OK Prostate Chip is a small device that is placed in the urethra (the urine passage) so that it acts on the prostate; the maker sells it in several shapes, sizes and materials. It is made and sold by OK Lab (Okada Comfortable Life Laboratory), a small company in Japan, through its own online store, and prices are in Japanese yen (JPY). The maker's development diary, "ok-lab's diary", is written in Japanese. This page is an English summary of it, and every quotation is translated. OK Lab ships internationally, so readers outside Japan can order (see "Buying from outside Japan" below). Product names on this page are plain-English descriptions. The official Japanese product name is shown once in the product table so you can find the same item in the store.
Before you read: key terms
| Term | Plain-English meaning |
|---|---|
| Surgical stainless steel | The named metal used to make these chip bodies. The diary does not explain this. |
| Resin | The material used for the earlier comparison chips; their shapes provided the starting point for the steel versions. |
| Thread holes | Curved passages inside the chip body, designed to hold attached threads. |
| Auxiliary chip | An optional additional chip offered with the main chip. Its purpose: The diary does not explain this. |
| 4-thread option | An arrangement with four attached threads; Mr. Okada considered it because he expected the heavier chip to affect thread durability. |
What happens: buying stainless steel prostate chips
The material does not describe what the base device, the OK Prostate Chip, is. These versions use surgical stainless steel (the metal named for this range), following earlier shapes made from resin (the comparison material). Their thread holes (curved passages inside the body) hold attached threads, and difficulties with those passages complicated production. The entries describe trial batches, limited stock, different prices, and changes to how buyers reserved products and paid for completed orders.
Trial sales of stainless steel prostate chips ended in August 2022
In an entry published in August 2022, Mr. Okada described experimental steel batches matching the outward shapes of established resin chips. The semi-long trial batch contained 14 chips in size M. Its provisional price was ¥9,000 (about $58 at ¥156 = $1, rate as of 2026-09-04) excluding tax, because detailed manufacturing costs had not yet been settled.
An update says this limited sale ended on August 23, 2022. Mr. Okada described larger orders across the range as conditional on successful trials, with no date set for a full launch. He asked interested buyers to contact OK Lab by email about the stock-limited trial.
(Source: ok-lab's diary, published August 2022)
https://ok-lab.hatenablog.com/entry/2022/08/20/122920
September stainless steel prostate chips kept similar sizes with narrower middles
An entry published in September 2022 reported new stock of Zoro chips in S and L, and semi-long chips in S. Mr. Okada estimated 10 or more of each, explaining that protective packaging prevented an exact count. These were designated for regular sales limited to available stock, with sales expected to begin around the following week.
Mr. Okada warned that another supply would not follow soon after the stock ran out. Sizes were almost identical to the resin versions, with narrower middle sections because, according to Mr. Okada, the steel was stronger. He referred readers to the accompanying videos for a closer look.
(Source: ok-lab's diary, published September 2022)
https://ok-lab.hatenablog.com/entry/2022/09/17/123057
Stainless steel prostate chips reached release with unresolved thread attachment problems
In an entry published in July 2023, Mr. Okada announced that every stainless steel chip shown in the accompanying photograph was available. His own checks still found quite a few chips whose thread would not pass through properly. He could not yet distinguish unfamiliar technique from difficult passages or defects in individual pieces.
The internal design used complex curves because he wanted secure attachment without a knot at the end. He had also requested two independent threads, so a break in one would not affect the other. Mr. Okada therefore asked buyers to use the temporary reservation system while these difficulties remained.
(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/08/122632
July prices for stainless steel prostate chips depended on their shape
In the entry published in July 2023, the main-chip price schedule was explicitly tax excluded. The short chip cost ¥7,000 (about $45 at ¥156 = $1, rate as of 2026-09-04), while the semi-long and standard Zoro chips each cost ¥9,000 (about $58 at ¥156 = $1, rate as of 2026-09-04). The flat-curved semi-long chip was ¥10,000 (about $64 at ¥156 = $1, rate as of 2026-09-04); the long Zoro and long chips were each ¥13,500 (about $86 at ¥156 = $1, rate as of 2026-09-04).
The awakening chip was ¥14,500 (about $93 at ¥156 = $1, rate as of 2026-09-04), and thread replacement cost ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) per chip, also tax excluded. For reservations, Mr. Okada asked buyers to name the chip type and size.
(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/08/122632
Stainless steel prostate chips carried separate charges for thread options and accessories
In July 2023, an auxiliary chip (an optional additional chip) could be included in a stainless steel reservation. Both the screw-shaped and flat auxiliary chips appeared at ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04) each in the tax-excluded schedule. The reservation form listed a +¥5,500 (about $35 at ¥156 = $1, rate as of 2026-09-04) charge for each of those additions.
The 4-thread option (an arrangement with four attached threads) carried a +¥2,750 (about $18 at ¥156 = $1, rate as of 2026-09-04) charge on the same form. Mr. Okada considered that option because he expected the metal's extra weight to reduce thread durability. He asked buyers to identify any required options when making their reservation.
(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/08/122632
Misleading stock notices prompted corrections for stainless steel prostate chips
In an entry published in April 2026, a reader reported that outdated stock notices made prospective buyers think stainless steel chips were unavailable. The reader flagged a long Zoro notice and described broader confusion around the semi-long and standard Zoro pages. OK Lab staff acknowledged a forgotten Zoro notice and temporarily removed the sold-out status for the semi-long and standard Zoro models.
The reader's request concerned confusing notices on the company's own online store, and staff responded by changing those notices. Mr. Okada directed buyers seeking stainless steel types other than the semi-long and standard Zoro to continue making inquiries by email.
(Source: ok-lab's diary, published April 2026)
https://ok-lab.hatenablog.com/entry/2026/04/04/122916
The maker's answer to buying stainless steel prostate chips
Email reservations allowed OK Lab to settle order details and complete thread checks before requesting payment.
Stainless steel prostate chips required completion checks before payment and dispatch
In the entry published in July 2023, stainless steel orders went through email reservations instead of the ordinary shopping cart. Mr. Okada said production would follow reservation order and include the requested thread length and any auxiliary chips. Payment was requested only after staff confirmed smooth thread passage and completed the requested product.
The stated shipping target was within 3 business days after payment confirmation. An addition to the entry allowed extra days for orders needing a drying stage. Mr. Okada asked customers to wait for the completion notice before paying.
(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/08/122632
Stainless steel prostate chips could remain unavailable while replacement batches were pending
In the entry published in July 2023, the semi-long and Zoro ranges started with 20 pieces per size. The long and short ranges started with 10 per size. Mr. Okada explained that an exhausted model could not be reordered immediately, because replacement orders needed a sufficiently large manufacturing batch.
He expected delivery to take 2 months or longer after placing that batch order. A chip that could not be completed might also leave an order unfulfilled if no replacement remained. Mr. Okada advised that restocking could take months even after ordinary shopping-cart sales became possible.
(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/08/122632
Stainless steel prostate chips prompted confirmation emails at reservation and completion
In the entry published later in July 2023, Mr. Okada explained that options and custom requests often needed discussion before an order was settled. OK Lab would confirm both receipt of the reservation and completion, including straightforward orders needing no discussion. Daily website progress reports ended; notices would instead cover major delays and products completely out of stock.
For custom work that could not be reassigned after cancellation, advance payment might be requested before production. Mr. Okada retained the general instruction to pay after the completion email.
(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/15/123004
How buying stainless steel prostate chips changed over time
| Published | What the diary said then |
|---|---|
| Aug 2022 | The limited M-size trial ended on August 23. |
| Sep 2022 | New stock allowed regular sales, limited to available pieces. |
| Jul 2023 | All pictured shapes became available through email reservations, subject to thread checks. |
| Jul 2023 | Reservation and completion emails replaced daily website progress reports. |
| Apr 2026 | Staff temporarily cleared semi-long and Zoro sold-out notices after a reader reported confusion. |
The diary does not say what the current state is.
OK Prostate Chip products related to buying stainless steel prostate chips
The current list includes the semi-long stainless steel chip and standard stainless steel Zoro chip, each priced at ¥9,900 (about $63 at ¥156 = $1, rate as of 2026-09-04) including tax.
Products that appear in these entries
| Product (official name) | Price incl. tax | Relation to this topic |
|---|---|---|
| Semi-long stainless steel chip (OKプロステートチップ セミロングタイプ（サージカルステンレス）) | ¥9,900 (about $63 at ¥156 = $1, rate as of 2026-09-04) | In April 2026, staff temporarily cleared its sold-out status after a reader reported confusion over availability. |
| Standard stainless steel Zoro chip (OKプロステートチップ 凶悪ゾロ（サージカルステンレス）) | ¥9,900 (about $63 at ¥156 = $1, rate as of 2026-09-04) | In April 2026, staff acknowledged a forgotten Zoro stock notice and temporarily cleared this model's sold-out status. |
The semi-long stainless steel chip is listed in OK Lab's own online store.
The standard stainless steel Zoro chip is listed in OK Lab's own online store.
(Source: ok-lab's diary, published April 2026)
https://ok-lab.hatenablog.com/entry/2026/04/04/122916
Products the diary mentioned as alternatives
The diary names no alternative.
Historical offerings: the 2022 size-specific batches; July 2023's short, flat-curved semi-long, long Zoro, long, awakening, and auxiliary stainless steel chips. No matching product can be confirmed on the current list.
Common worries about buying stainless steel prostate chips
(The material contains no questions from readers.)
Buying from outside Japan
OK Lab ships internationally to countries covered by Japan Post's EMS courier service. Overseas orders are paid in advance by PayPal. Each order carries a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee, and EMS shipping is charged on top. These terms come from OK Lab's official sales-terms page (written here as plain text, not a link: ok-lab.net/docs/law), checked on September 7, 2026; confirm them on the official store before you order, because they can change.
Summary of this article
| What you wanted to know | The answer |
|---|---|
| What is the short answer about buying one? | The current list includes the semi-long and standard Zoro stainless steel models. |
| What is the OK Prostate Chip? | A device made by OK Lab in Japan and placed in the urethra to act on the prostate. |
| What do the technical terms mean? | The entries discuss chip materials, internal thread holes, optional auxiliary chips, and a four-thread arrangement. |
| What happened during stainless steel sales? | Trial batches led to wider sales, while thread attachment problems affected how orders were accepted. |
| How did the maker handle those problems? | Email reservations, completion checks, payment notices, and warnings about slow restocking formed the temporary ordering process. |
| How did the process change over time? | Sales expanded, confirmation emails became standard, and misleading stock notices were corrected. |
| Which related products have current listings? | The product table identifies the semi-long and standard Zoro models using their official Japanese store names. |
| Does the material contain reader questions? | It contains a reader's report and suggestions about confusing stock notices, but no questions. |
| How can someone outside Japan buy? | The supplied sales terms specify advance PayPal payment, a handling fee, and additional EMS shipping charges. |
Source: ok-lab's diary (Okada Comfortable Life Laboratory). The original entries are in Japanese; quotations on this page are translated. Photos and videos are on the original entries.
This article is a summary of the maker's development diary. The product is not a medical device and no result is guaranteed. If anything feels wrong or worries you, see a doctor. Prices, specifications and cautions change, so confirm the latest information on the official blog and the official site. Questions about ordering and shipping go to the seller.