F&F STEEL Power Rack Attachment Pin Adapter Sleeve - Universal Fit

In this review the F&F STEEL Power Rack Attachment Pin Adapter Sleeve is evaluated for lifters and gym owners who need to adapt 5/8 in or 3/4 in attachment pins to fit 1 in holes on common power racks, cages, and rigs. The bottom line: it is a simple, well-made adapter set that solves interchangeability between different sized attachments and 1 in hole rigs, providing a durable, rust-resistant option made in the USA for anyone who wants a reliable pin conversion without modifying existing gear.

Key Features

• Universal fitment: Converts any attachment with a 5/8 in pin to a 1 in diameter so older or different-brand accessories can be used in racks with 1 in holes.
• Made in the USA: Machined with tight tolerances which gives confidence in consistent fit and durable performance.
• Durable finish: Clear zinc plating resists rust and extends service life for use in humid or garage gym environments.
• Easy to install: Includes set screws and an Allen wrench so sleeves can be fitted and removed quickly between attachments and rigs.
• Improved length: Increased 3.125 in length on the new version to provide a more secure engagement on 3 in tube frames.
• Complete kit: Ships with two adapter sleeves, four set screws, and an Allen wrench so no additional parts are required for installation.

Who It's For

This adapter set is ideal for gym owners, CrossFit athletes, and home lifters who have attachments with 5/8 in or 3/4 in pins and want to use them on a rig or power rack with 1 in holes. It is especially useful when managing mixed equipment from different manufacturers and looking to avoid fabricating custom pins or replacing attachments.

Those who should look elsewhere are buyers with nonstandard tube sizes outside the listed 2x2, 3x2, and 3x3 racks or users who require a longer custom sleeve for very thick frames; a small number of customers reported a too-short fit on certain frames, so confirm measurements before purchase.

Pros & Cons

Pros

• Made in the USA with tight machining tolerances, which gives reliable fit for most standard rigs.
• Clear zinc plating prevents corrosion, so the adapters remain serviceable for years.
• Comes as a ready-to-use kit with set screws and an Allen wrench for quick installation.
• Longer 3.125 in length improves stability on thicker tube frames compared with earlier, shorter versions.

Cons

• Fit is mixed on some nonstandard frames; a few customers found the sleeve too short for their tube dimensions.
• Designed for 5/8 in to 1 in conversion only, so it is not a universal solution for every pin size difference.

Specifications

Brand	F&F STEEL
Function	Adapter sleeve converting 5/8 in to 1 in
Compatibility	Standard 2x2, 3x2, and 3x3 power racks, cages, rigs
Finish	Clear zinc plating
Kit contents	Two adapter sleeves, four set screws, Allen wrench
Length	3.125 in
Origin	Made in the USA

Our Verdict

The F&F STEEL adapter sleeve is a practical, value-oriented solution for anyone needing to run 5/8 in or 3/4 in pinned attachments in racks with 1 in holes. Its US machining, corrosion-resistant finish, and included hardware make it an easy, long-lasting upgrade for mixed-equipment gyms, though buyers should verify frame dimensions if they have unusually thick or nonstandard tubing.

Frequently Asked Questions

Will this fit my 2.38 x 2.38 power rack?
Yes; customers report it works perfectly on common 2.38 x 2.38 racks, but confirm your pin and hole diameters before purchase.

Are the sleeves rust resistant?
Yes; the clear zinc plating is designed to resist rust and extend service life in gym conditions.

What is included in the package?
The package includes two adapter sleeves, four set screws, and an Allen wrench for assembly and secure installation.