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Boneyard OSO CM-1 Metal Collars

Last checked a year ago
Boneyard OSO CM-1 Metal Collars

These metal collars from Rogue Fitness are designed to be used as weightlifting clamps on barbells. They have an Oso design, with an iconic red and black color scheme, and are made of powder-coated metal that is designed to be durable and rust-resistant. The collars feature a spring-loaded design that allows them to be easily and quickly attached and removed from the barbell, and the textured clamping surfaces provide a secure grip for safety during the exercise. The collars can fit all standard two-inch weightlifting bars and plates, and their lightweight design makes them easy to transport and store. With their robust construction and convenient design, these collars from Rogue Fitness are an effective and reliable piece of fitness equipment for your strength training routine.


Pros & Cons


• Secure metal collar prevents weights from slipping

• Can be used on most standard Olympic-sized bars

-Heat treated stainless steel Construction

• Low profile design

• Lightweight


• Price is relatively higher than other collars

• Seams can be sharp

• Difficult to adjust while on the bar

Who Should Buy

Should Buy:

- Durable and reliable metal collars

- An inexpensive option to get high-quality collars

- Made of steel to secure bumper plates on a barbell

- Easy to install and remove

- Magnetic system design for a safe and secure connection

Should Not Buy:

- Not suitable for bumpers thinner than 45mm

- Not optimal for users who need the highest clamping force

- The collars do not provide locking protection to prevent plates from coming off the barbell due to vibration


•Outside Diameter: 1.00 inch (2.54 cm)

•Inside Diameter: 0.71 inch (1.80 cm)

•Thickness: 0.062 inch (0.16 cm)

•Operating Temperature: -413° to +572°F (-251° to +300°C)

•Design Pressure: Vacuum to 4800 PSI (330 bar)

•Material: 3130 Steel Alloy

•Finish: Electroless Nickel Plate

Oso Boneyard OSO CM-1 Metal CollarsProduct 1Product 2Product 3
Weight8 oz.4.8 oz.4.1 oz.
MaterialAircraft-grade aluminumSteelNylon
Adjustable Range46 – 82 cm28 – 61 cm14 – 36 cm
Lock MechanismSlide-lockQuick-release buckleQuick-release buckle

Price History

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