Material: Plastic and Metal Color: Silver and Black Prevents plate weights from sliding off the bar They will fit all standard 1" Hole (2.5cm/2.8cm/3cm) weightlifting barbells or dumbbell bars Made from Solid steel and rubber support grip. Rubber Grip Handles allows comfortable and easy to method to remove Quantity: 2Pcs (1Pair) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 2pcs x 25/28/30mm Barbell Spring Collar Clips