Rubber (urethane) Grip Olympic Plates Designed using state-of-the art technology, Body-Solid Rubber (urethane) Grip Olympic Plates surpasses all others in quality, accuracy, reliability and price. Quad-grip design guarantees safer and easier performance than any other plate on the market. Encased in durable, heavy-duty rubber to prevent scuffing or damage to equipment, walls or floors. Impact-resistant, these Olympic Plates will not split, crack or peel. They are also impervious to rusting, chipping, flaking or losing their color. And the integrated metal sleeve provides a smooth, secure fit onto any Olympic bar. Heavy lifting has never been easier or safer. U.S. Pat. No. 5,137,502 under license from Iron Grip Barbell Company, Inc.