Olympic Bumper Plate Durometer: 90 Made from high-density virgin rubber, these 17.7 inch plates boast an 90 durometer rating withstanding repeated drops with minimal noise and exceptional durability Rubber coating prevents damage to your floor; Stainless steel insert offers a secure fit and prevent damage to the bar. SPECS Material: High Density Rubber Insert: Fitted Stainless Steel Insert Diameter: 2 inches Bumper Plate Diameter: 17.7 inches Low bounce for safety Color: Black/White Read more Versatility With Zoomster bumper plates you can do a wide range of exercises from bench presses, squats, and deadlifts to pylos, twists, and halos whether in your home or school gym or at a professional training center. Low Noise Bumpers are far quieter when they’re dropped on the floor than the other types of plates, because they’re wrapped in rubber. They’re also usually used with rubber matting, which helps to deaden sound and protect the floor at the same time. Floor Protection The thicker width of bumper plates coupled with the flat surfaces on the plates helps to protect your floor. By spreading the weight across a larger surface area there’s less pressure through one particular spot when the weights are dropped. Read more Read more