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OSO CM-1 Metal Collars

$52.95
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OSO CM-1 Metal Collars

The OSO CM-1 Metal Collar introduces some innovative new engineering elements inspired by customer feedback and advances in precision technology. This includes rubberized interior plugs for a superior hold on the bar, an updated handle, and a fresh new design made from OSO’s top-grade 6061 Billet Aluminum. The CM-1’s cam locking clamp mechanism secures the collar in place for consistent stability and peace-of-mind through even the most intense weightlifting regimen.

OSO CM-1 Metal Collars are sold in pairs and sized to fit all standard 50mm Olympic barbell sleeves. A budget-friendly polymer version of this design is also available separately.

Fast Rogue Shipping

Orders placed before 3pm ship from Rogue HQ the same day. You can then follow the progress of your package online via the Rogue Shipping Tracker.

Additional Specifications:

  • Sold in Pairs
  • Made in the USA
  • Designed to be used on 50mm Olympic Bar Sleeves
  • 6061 Billet Aircraft Grade Aluminum construction
  • Weight: approx. 1 LB per pair
  • NEW Rubberized interior plugs for a tight hold on the bar (see instructions for use below)
  • NEW Handle design
  • Cam Locking clamp mechanism for lock-down stability

Instructions for Inserting Plugs

  • Step 1 – Align plug so that it sits evenly atop the slot that it will be pressed into
  • Step 2 – Gently push with both thumbs, alternating from the top to the bottom, and repeat. This will slowly work the plug into position in a small amount at a time. (If you try to force the plug in, it will tend to stick, and will then require more effort than necessary. It may help to get the sides of the plugs wet so that they slip in more easily)
  • Step 3 – Once the plugs are in place, it may take a couple of clamping cycles on the bar to get them completely seated. This entire process should only take a few minutes for each collar

The standard rubber plugs included with these OSO collars are gray, but customers can opt to add a 4-pack of extra rubber plugs to their order in any one of a dozen additional colors. Check them out here.

See Also: The exclusive Rogue OSO Barbell Collar

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 approx. 1 LB per pair
Material Type 6061 Billet Aircraft Grade Aluminum
Other Product Specs 2 Year Warranty*
OSO CM-1 Metal Collars is rated 5.0 out of 5 by 9.
Rated 5 out of 5 by from Great product I have only used the cheap plastic collars at my local gym. I have to say that the Rogue collars are of the finest quality.
Date published: 2018-06-07
Rated 5 out of 5 by from COLLARS WORK GREAT - NO SLIP Used a few times. Hold plates in place, plus they look great! WOD partner is ditching his older collars and ordering a set of these!
Date published: 2018-05-28
Rated 5 out of 5 by from Best Collars I've used. Hands down the best collars I've ever used. The plates don't move at all! So far I've dropped heavy deadlift and dropped the barbell from overhead. The plates and collars stayed put. Get these now.
Date published: 2018-04-28
Rated 5 out of 5 by from Working Nicely Took a workout or 2 for the rubber inserts to really settle fully into place, but once they did - wow. This is one slick, secure collar. Locks onto the sleeves and doesn't budge. Use caution when unclamping the levers on the collar, they unlock with some force early on.
Date published: 2018-04-12
Rated 5 out of 5 by from Best design out there These collars are the best I've used. The reason for that is that the plugs keep them really tight AND can be replaced when they wear out... and they will over time. Not sure if they can still be replaced since oso sold out to rogue. If they can then they are great... if not then they are just another expensive collar.
Date published: 2018-02-06
Rated 5 out of 5 by from dont second guess yourself iv been hesitant for about a year on spending money on good collars. These are the best.............HANDS DOWN. I would buy again in a second!!!
Date published: 2017-12-06
Rated 5 out of 5 by from Nice Easy to use, not too heavy. If used with cheap worn plates, the plates might crack faster with theese than with standard spring collars. Only wish tthe clamp itself was made from either carbon fiber instead of plastic composite.
Date published: 2017-10-31
Rated 5 out of 5 by from Never without them now I bought these at the 2017 Games after seeing them take a beating on the competition floor. My lifting partner and I put them through 16 rounds of 17.5 in 15 minutes and they didn’t budge. Everyone else was readjusting their bar and plates, ours held fast. I bought them on the final day of the games and received free engraving from a great bunch of people at the OSO booth, highly recommend! Get the metal ones, they’ll last you forever.
Date published: 2017-09-09
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