OVERVIEWMETAL MUSCLE Bumper Plates have been rigorously tested by coaches and athletes in competition and are suitable for any type of metcon or strength workouts. Matte black finish, classic and simple design that’s all business! Created from durable 100% rubber, these bumper plates are designed for low bounce and high durability and high repetitions! The stainless steel inserts slide in smooth and tight on all Olympic size barbells. These Bumper Plates are high-performance, economical friendly product for any gym or training environment. Each bumper is IWF standard 450mm diameter, perfect for all competition training in Functional Fitness, Olympic lifting and Strongman. KEY FEATURES• Stainless Steel Inserts• Minimal Bounce & Vibration • High Durability SPECIFICATIONS DIAMETER 450MM (IWF STANDARD) COLLAR OPENING 50MM (OLYMPIC BARBELL STANDARD) MATERIAL 100% RUBBER WITH MATTE BLACK FINISH SIZES 5KG, 10KG, 15KG, 20KG, 25KG