4Pcs Anti-slip Weight Lifting Fix Dumbbell Dumbbell Nut Hexagon Nut Barbell Bar Features: 100% new and high quality High Quality and Durable: Barbell spin-lock collars are made from robust and durable material for long lasting use, and it is your best choice. Usage: Barbell clamps can keep weight plates placed securely and safely while lifting. Nice replacement of old or broken hex lock nut with this new one. Widely Applicable: Perfect for bumper plate use, and platform lifting workouts. They will fit 25mm standard weight lifting barbells or dumbbell bars. Craftsmanship: The thread polishing is done very carefully, and the buckle is tighter, so that you can avoid unnecessary injuries during exercise. Suitable Gift: Spin-lock collars fit for kinds of weight lifting barbells dumbbell bars training gym sports. Really a great gift for your friends. Specification: Material: Plastic Color: Red/Black Package Weight: approx.120g Inner Diameter: approx.25mm/0.98in Quantity: 4Pcs Package Includes: 4Pcs x Barbell Nuts note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!