Available in 210lb, 350lb and 420lb sets consisting of 25lb, 35lb, and 45lb bumper plates that provide a dead bounce, and easy weight identification. The reinforced steel molded in hubs are coated with a proprietary material that forms a chemical bond with the rubber that prevents separation. Most competitors press in the hub after the rubber is molded which will over time, always lead to failure. The 25 lb – 45 lb plates are the standard IWF 450mm in diameter. These bumper plates are slightly darker than our standard colored bumper plates.Our unique and proprietary manufacturing process allows us to produce a bumper that has both higher tensile strength and hardness than competitor plates. This is accomplished by molding with a harder rubber near the core, which prevents the hub from separating and plate wobble over time, and a softer rubber on the outside to act as a buffer deadening the blow and sound from the plate when dropped. The rubber itself is 100% virgin and passes REACH and Rohs standards with a weight tolerance of /-0.5%. 210LB SET: (2) Blue 45LB Plates (2) Yellow 35LB Plates (2) Green 25LB Plates 350LB SET: (4) Blue 45LB Plates (2) Yellow 35LB Plates (4) Green 25LB Plates 420LB SET: (4) Blue 45LB Plates (4) Yellow 35LB Plates (4) Green 25LB Plates