This set consists of 4 weight plates that weigh 7.5 kg each. It will be perfect for strengthening and shaping your muscles when used with a barbell bar, dumbbell bar or curl bar with a diameter of 30 mm. It is ideal for use at home or in a gym. These weight plates are made of high-quality cast iron with a scratch-resistant baked enamel powder coat finish. The weight is clearly stamped on each plate for quick and easy identification.