CORTEX OLYMPIC ALUMINIUM COLLARS Commercial Design Made with aluminum the durable design lockjaw is built to last. The perfect fit for Olympic-sized bars with a 50mm diameter. Lock and Release For an easier and efficient workout, the simple locking system allows you to quickly lock and release. For Serious Strength Training The high clamping power ensures you can train at max weight and have a secure workout. Incredible Durability Made with a High-Quality Commerical design, the Olympic Aluminium Collars are three times more durable than plastic Lock Jaw Collars. Padded for Protection The elastomer pads provide protection to reduce damage to the bar and weights. TECHNICAL SPECIFICATIONS GENERAL Suitable for Olympic sized bars 50mm diameter Material: Aluminium and Plastic for clip handle Inner Elastomer Pads Quick Release Lever DIMENSIONS AND WEIGHT Net Weight 380g