The Origin Coloured Rubber Bumper Plates adds life and colour to any gym environment. Steel inner ring means plates slide on and off bars effortlessly Steel ring protects rubber Vibrant colour scheme 450mm diameter The Origin Olympic Rubber Weight Plates are suitable for use in Powerlifting and other heavy duty weightlifting programmes. The rubber material reduces the noise made from the plates coming in contact with each other are specifically designed for Olympic style lifting such as snatch and clean & jerk, but can be used just as well for power lifting (deadlift, squat & bench press). The diameter of all plates is 450mm which means the impact will be dispersed across all discs. Thickness 5kg: 25mm 10kg: 38mm 15kg: 57mm 20kg: 75mm 25kg: 95mm SPECIFICATION: Brand Origin Usage Home Use, Commercial Use Condition Brand New Warranty 1 year warranty