[Material]:The barbell spinlock collars are made of iron material, chrome plated, durable and corrosion resistant and can be used for a long time.[Size]: The anti-slip collar of the barbell is suitable for 25mm standard barbells or dumbbells. Please check the size before purchasing.[ANTI-SLIP DESIGN] - The barbell clamp is equipped with a non-slip rubber ring, ensuring it can be securely and securely attached to the barbell or barbell bar.[Package Content]: 4 Pcs x Dumbbell Spinlock CollarsApplication: Perfect for use with bumper plates and lifting platforms. Also a practical and perfect gift for fitness lovers.ProduktbeschreibungSpecification:Material: iron with chrome-plated materialSize: 1 inch / 25 mm.Colour: silver.Package includes:4 x dumbbell spinlock collars.Please note: due to manual measurement, there may be a 0-2 mm error.