Body-Solid Steel Grip Olympic Sets. Fully-integrated, Quad-grip design guarantees safer and easier performance than any other plate on the market. Accurate within 2% or better of stated weight, Body-Solid Steel Grip Olympic plates are cast from the highest quality gray iron, creating an exceptionally strong and durable product. Feature baked on hammertone gray finish that is durable, chip and rust resistant. Heavy lifting has never been easier or safer. U.S. Pat. No. 5,137,502 under license from Iron Grip Barbell Company, Inc.