TronStore Premium Professional Quality Olympic Workout Exercise Barbell Locking Collar Pair with Quick Release Latch for 2-Inch Size Olympic Bars Premium Professional Quality Barbell Locking Collars Locking Secure Snap-Latch - One-hand installation and removal - Perfect for weight lifting workouts For 2-Inch Size Olympic Bars 1-Pair - 2x Collars Total Material: Solid nylon injection molded frame - Color: Black