CALIDAKA 4pcs Spinlock Collars, Dumbbell Hex Nut, Dumbbell Rod Nut, 1 Inch Standard Barbell Screw Collar, Nonslip Dumbbell Screw Clamps for Dumbell Weight Lifting Fitness Training

Usage: Collars are easy and quick way to move your plates around, they also keep weight plates securely and safely while lifting., Application: For all 1 inch standard weight lifting barbells or dumbbell bars., Easy to Use: Easy and quick to remove, safe and secure to provide balance and stability., Durable: Made from robust and durable material for long lasting use., Package: Included 2 pairs of dumbbell hex nut for you to use.