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OSO Barbell Collars

OSO Barbell Collars are made in the USA from the same type of 6061 aluminum alloy used in aircraft construction. The OSO Barbell Collars deliver on functionality, too--creating a secure hold on the bar through repeated, high-impact drops, and allowing easy adjustments or removal with a simple lever and lock/unlock mechanism.

All that being said, the first thing a lot of lifters talk about with the OSO Barbell Collars is how they look. Shaped like an industrial gear, the collars’ old school design is paired with some great color options.

For Oly lifters, CrossFitters, or any athlete looking for an upgrade from basic spring collars, OSO Barbell Collars are a nice option.


  • Sold in Pairs
  • Made in the USA
  • Designed to be used on 50mm Olympic Bar Sleeves
  • 6061 Billet Aircraft Grade Aluminum
  • Orange Rubberized interior lining to protect bar
  • Locking clamp mechanism for secure hold
  • Color Options: Blue or Gun Metal

Rogue fitness will warranty this product from defects in material, functionality and workmanship for a period of 2 years from the date of purchase of the product of the product. The warranty applies only to the original purchaser of the product for so long as the original purchaser owns the product, and is non-transferable. Warranty may be voided for any product which has been damaged due to negligent or faulty use, alteration, maintenance, storage or handling by the user. Any specific issues regarding a Rogue product with which a customer is not satisfied will be reviewed on a case-by-case basis.Note: Rogue will continue to honor warranties on products purchased directly from OSO prior to Rogue's acquisition of OSO Barbell Collars on these same terms and conditions.

Gear Specs

Brand OSO
Made In USA Yes
Product Weight 0.8 lbs (Per Pair)
Width 1.5"
OSO Barbell Collars is rated 4.8 out of 5 by 46.
Rated 5 out of 5 by from More better than other collars There are only two things that vastly improve my oly lifting: having a beard, and these collars. The down side of them, they keep the weights tight even after repeatedly dropping a loaded bar, so they take away my excuse to catch my breath during a WOD while I “retightenig my weights”.
Date published: 2018-04-05
Rated 4 out of 5 by from Great collar I purchased this a month ago. It is a great clamp, lightweight and simple to use. It is much better than the standard clamp, and i feel much more comfortable knowing that the plates will be held tight on the sleeve. Watch your fingers though, if you dont release them the right way, they'll snap up from the tension and bite your fingers. Not a big deal, jist caught me off guard the first time!
Date published: 2018-03-24
Rated 5 out of 5 by from Works great. I have just tried them once. They look really cool and are easy to take on and off. Thumbs up
Date published: 2018-02-21
Rated 5 out of 5 by from Easy on and off Bought these about a month ago and I like em a lot. Quality product and easy to get in and off barbell so if doing emom and you need to change weight you can do it without additional taxing. Keep the bumpers locked nicely in place so no need to readjust weight on barbell.
Date published: 2018-02-18
Rated 5 out of 5 by from OSO Collars Product as advertised. Thumbs up DB curls no problem. No slippage.
Date published: 2018-02-09
Rated 5 out of 5 by from Great clips! I was growing tired of always having to readjust the old plastic clips mid-workout at my gym (especially during high-rep barbell workouts) so I decided to finally buy these. Best decision ever! They are bery secure and look great! I may be another pair!
Date published: 2018-01-31
Rated 5 out of 5 by from Tight fit. Easy lock and unlock. Bought product a few weeks ago and can't express how much easier the clamps are to use compared to the spring clamps.
Date published: 2018-01-04
Rated 5 out of 5 by from Great! I bought these collars a few weeks ago, and they are great. My sister owns a pair over a year, hers and mine are just as good - so I trust they will keep. They grip perfectly, easy to put on the bar, easy to take off the bar. And best of all- great color!
Date published: 2017-12-31
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