OSO Axle Bar Collars This barbell clamp fits for 2 inches Olympic standard size. Quick release, not easy to slide. Perfect for workouts, Olympic lifts, overhead press, deadlifts, bench press, powerlifting or any other workout using 2 inches Olympic Barbell Material: reinforced plastic. ABS Package Includes: 2 Barbell Clips. Packing is branded with Clout Fitness trademark