Overview
The OSO CM-1 Metal Collars 2.0 represent the premium, all-metal version of the OSO cam-locking collar line. Precision CNC-machined from aircraft-grade aluminum in Columbus, Ohio, these collars offer a high-strength alternative to plastic or resin collars. The 2.0 version features a redesigned clamp lever for increased durability and ease of use, ensuring a vise-like hold on standard Olympic barbells through repeated high-impact drops.
Product Page: OSO CM-1 Metal Collars 2.0
Key Features & Specifications
Made in the USA: Manufactured and assembled at Rogue HQ in Columbus, OH.
Material: Precision CNC-machined from 6061 billet aircraft-grade aluminum.
Locking Mechanism: Patented Cam Locking clamp for industry-leading stability.
Internal Protection: Equipped with rubberized interior plugs that grip the bar sleeve tightly without damaging the finish or knurling.
Updated Design: Features an improved lever mechanism and a refreshed industrial exterior look compared to the original model.
Weight: 0.5 LB per pair.
Width: 1.625” (Including plugs).
Compatibility: Designed for standard 50mm Olympic barbell sleeves.
Color: Available in Gunmetal Gray and other anodized finishes.
Performance Benefits
Maximum Security: The rigid aluminum frame does not flex like polymer collars, providing a superior hold during heavy deadlifts, cleans, and high-repetition workouts.
Impact Resistance: Specifically tested to withstand repeated drops from overhead, making them ideal for competitive functional fitness and weightlifting environments.
Customization: While standard plugs are black, athletes can personalize their collars by purchasing OSO Rubber Collar Plugs in over a dozen different colors.
One-Handed Operation: The ergonomic cam-lever is designed for rapid, one-handed locking and unlocking, saving time during plate transitions.
Maintenance and Care
Cleaning: Periodically wipe the rubberized interior plugs with a damp cloth to remove accumulated chalk and dust. A clean plug surface is essential for maintaining maximum friction and holding power.
Lever Check: Verify that the cam-locking lever "clicks" into place. If the lever feels unusually loose or tight, check the alignment of the interior plugs.
Storage: Store in a dry environment. The anodized finish is highly corrosion-resistant but can be scratched if dropped on concrete or stored with sharp metal objects.
Warranty Information
Rogue Fitness provides a 2-year warranty against defects in material, functionality, and workmanship from the date of purchase. This warranty applies only to the original purchaser and is non-transferable.
Frequently Asked Questions
Q: Will these fit my specialty bar (e.g., Axel or Log)? A: These are designed for standard 50mm sleeves. If your specialty bar has standard Olympic-sized sleeves, they will fit. For 1.9" pipe sleeves, Rogue offers dedicated OSO Mighty Axle Collars.
Q: Are these sold as a pair? A: Yes. All OSO CM-1 Metal Collars are sold and shipped as a pair.
Q: Are the interior plugs replaceable? A: Yes. The rubberized plugs are designed to be easily replaceable if they become worn or if you wish to change the color of your collars.