Upgrade your collar game with the BLK BOX Aluminium OSO Collars.

An alternative version of the BLK BOX Aluminium Collars, each collar is manufactured from a high-grade aluminium alloy with soft plastic jaws to protect your barbell. The BLK BOX Aluminium OSO Collars are perfect for all facilities, stylish and durable with a machined BLK BOX logo, the product looks just as good at home in a garage gym as it does in large sports facilities.