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OSO CM-1 Metal Collars

OSO CM-1 Metal Collars
Collars come standard with black plug.
OSO Rubber Collar Plugs - 4 Pack

Special Price $5.25

Regular Price: $5.25

Plugs only. Collars NOT included.

3 Ships Free Item

Buy 3 or More Items Marked "3 Ships Free" & They All Ship For Free

Cont. US 48 Only

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 come standard with black plugs. Sized to fit all standard 50MM Olympic barbell sleeves. A budget-friendly polymer version polymer version of this design is also available separately.

Addition rubber plugs can be purchased in a variety of colors. See the checkout area for more details.

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
  • Manufactured in Columbus, Ohio
  • Designed to be used on 50MM Olympic Bar Sleeves
  • 6061 Billet Aircraft Grade Aluminum construction
  • Weight: approx. 1LB 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. 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
Color Various Colors
Product Weight approx. 1LB per pair
Material Type 6061 Billet Aircraft Grade Aluminum
Other Product Specs 2 Year Warranty*
OSO CM-1 Metal Collars is rated 4.8 out of 5 by 20.
Rated 5 out of 5 by from Awesome collars! Definitely glad I purchased these. Picked up a new Eleiko barbell and needed collars to suit it - the old spring clips wouldn't have done the job. They take some wiggling to get on the sleeves at first. But after your first set of snatches or cleans, the rubber inserts settle in and they go on and off effortlessly. Also, they DO NOT slip when locked in place. Great collars again - would recommend.
Date published: 2019-10-17
Rated 4 out of 5 by from Definitely tight and keeps the weights on. Only reason for a 4, is because I ordered black and they look like a metallic purple. Metallic purple does not match my bar.
Date published: 2019-07-11
Rated 5 out of 5 by from Plates will not budge Awesome hold. The plugs make all the difference and it’s nice they’re replaceable if they do lose grip. User note: turn clip lever all the way back the first couple times you place them on or else they won’t slide.
Date published: 2019-07-04
Rated 5 out of 5 by from Super I bought them to replace some useless spring collars on my Olympic dumbells as you will see them. The CM1 is easy to apply and disengage with 2 positions. The bare iron plates are now noiseless which is great for the neighbors and me as they otherwise make a racket! They are light and small enough to take to a gym. they do the same for the barbell however I have some nicer IPF rated ones for my one at home. I have never dropped weights from height so they are unlikely to get damaged. Very grippy and easy to remove, excellent quality I'd recommend, get some for the gym!
Date published: 2019-07-01
Rated 4 out of 5 by from Great Collars - Misleading Colors Functionally, these collars are perfect. However, the "gray" collar isn't actually gray...it's gunmetal. If you don't know what gunmetal looks like, it's light purple. So for people that want a basic neutral color, they are getting shipped purple collars...
Date published: 2019-05-30
Rated 5 out of 5 by from Solid collars Bought these collars to replace old style plastic collars which started slipping. These hold super tight. When dropping the bar with weights the collars don’t move at all. super happy with the product.
Date published: 2019-05-22
Rated 4 out of 5 by from Good collar! As of day 1: Almost perfect! Love the replaceable grip. Hate the handle...feels fragile. Feels like brittle plastic.
Date published: 2019-05-05
Rated 5 out of 5 by from Solid collars I use these on my Rogue loadable dumbbell handles. Couldn’t be happier with the collars. They hold like nothing I’ve used before. I have no concerns about these sliding off my dumbbell handles regardless of the exercise I’m doing.
Date published: 2019-04-19
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