One of the leading heavy-duty, dead-blow bumper plates in the industry have been revamped with new artwork and a gloss-matte-gloss finish. The HyGYM IWF Olympic Bumper Plates Set are manufactured from high quality rubber, with a clean surface and nickel-coated steel centre plate. The 50.4mm collar opening gives you a firm hold, and the thin cut of the plates enables a higher loading capacity. Sold in pairs, these training plates are finished in black with bright, colour-coded lettering . The average Shore A durometer for these bumpers is 90, making them ideally suited to the demands of the serious Olympic lifter. Expect a consistent dead blow with minimal bounce, even on high impact drops. KG Training 2.0 Plate Widths: 5KG (Black): 20mm / 0.87" 10KG (Green): 31mm / 1.22" 15KG (Yellow): 43.5mm / 1.71" 20KG (Blue): 54mm / 2.13" 25KG (Red): 64.5mm / 2.54" HyGYM IWF Olympic Bumper Plates Set Specifications: Outside Diameter: 450mm Inside Diameter: 50.4mm Insert: Steel disc, nickel coated Weight tolerance: +/- 15 grams of claimed weight NEW Gloss-Matte-Gloss Finish Durometer: 90 +/- 2