RAGE Hi Temp Olympic Rubber Bumper (Sold individually) Available in 7 weights: 5lb,10lb, 15lb, 25lb, 35lb and 45lb. SOLD INDIVIDUALLY. Made to Olympic standards, these plates are 17.5 in diameter (except 5lb- 14.25 diameter) 2 stainless steel collar center that ensures a long life and superior control while fitting onto all standard bars, racks and sleds. Consisting of a quality solid composite of recycled rubber with minimal bounce technology These are easy on your hands, safe on your floors and environmentally friendly.