The Core Bumper weight plates are a great choice for a wide range of tough strength training or even crossfit workouts at home or in the gym. Our range includes 5, 10, 15, 20 and 25 kilogram weight plates. The high quality Bumper weight plates are rubber coated with a stainless steel core. The rubber coating effectively protects the weight plates, barbell and floor from impact, making Bumper weight plates ideal for workouts in which the barbell is dropped to the floor. However, the weights should be used on an appropriately durable surface to avoid damage to the floor. These Bumper weights have a diameter of 450 mm and fit all standard 50 mm plate barbells. The weight variation of these weights is very small, only +/-0.5%. NOTE! The package contains two weight plates. For the option of one Core Bumper weight click here. Product information: The package contains two plate weights Black color Materials: Rubber, steel Suitable for hard training Hole diameter: 50 mm Weight options: 5, 10,