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.

Description: 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. Specification: Material: plastic Color: black Size(approx: 2. 5cm/0. 98inch Package: 2 pairs * Hex nut.