Our bumper plates are excellent for training the Olympic lifts, which end with the bar overhead or at shoulder height. This allows the lifter to drop the bar after completing a lift, or if a lift is missed, without harming the bar, surrounding equipment, flooring. SPART Color Olympic Bumper Plate The new series of SPART LB Color Bumper plates combine advanced, precision machining for superior durability and chip prevention, making them perfect for cross training/HIIT workouts and Olympic weightlifting. Combined with stainless steel inserts and 100% natural rubber. Our bumper plates offer a dead bounce and durability rarely seen in an economical plate. 2 IN center hole Diameter: 17.75 IN 100% High-Density natural rubber Solid stainless steel insert Smooth Steel Inserts & Low Noise Smooth steel inserts molded into the bumper plates increase durability versus older designs with brass inserts and protect bars from abrasion. They also very quiet which makes them excellent for home use or in a personal training studio. IWF Color Standards From heaviest to lightest, the colors are red, blue, yellow, and green. Our color bumper plates make it easier to keep your plates organized and find the ones you need at a glance, especially in larger gyms where multiple athletes are using the same equipment. Durability & Dead Bounce Combined with stainless steel inserts and quality virgin rubber, our bumper plates offer durability rarely seen in an economical plate, also offer a dead bounce which means getting back to the bar faster without wasting time letting the bar settle or stop bouncing around.