Components: This product includes a pair of 1x1inch standard barbell ring screw clamps, which are made of durable materials and can be used for a long time Anti-slip collar: Anti-slip mute gasket can reduce the noise generated when the disc hits the pole, and can easy to slip-off the barbel : The barbell clip can safely and firmly place board when lifting. This new nut can be a good replacement for the old or damaged hex lock nut. Widely applicable: They will fit most 1x1inch standard weightlifting barbells or dumbbells, including the amount of exercise to find exercise, elevated press, deadlift, and bench press Great gift: collar is suitable for all kinds of weightlifting barbells, dumbbells, barbells, fitness exercises and others training colour:black Material:plastic size:25mm Package Contents: 8 x Dumbbell Bar Nut Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.