Our Rubber Tri-Grip Olympic Plates are encased in durable, heavy-duty rubber, to prevent scuffing or damage to equipment, walls, or floors. Features: - Tri-Grip Handles Maximize comfort and control - can also perform a range of compound and isolated movements without a barbell in use. Rubber Coated - Made with premium rubber, the plates will always maintain a bold solid color throughout their life of the plate. Solid Cast Iron Metal Core - Made of solid cast iron with a machined hole and a durable, baked enal finish. These weights have 2-inch/ 50mm cento holes to fit Olympic bars. Stainless Steel Inner Ring - Stainless steel inner ring helps you smoothly place these on any bars with ease. Avoid the hassle of your plates getting stuck during an intense workout. What's in the box 1 x 20KG Olympic Rubber Weight Plate.