RAGE Fitness PRO Olympic Bumper Plate (SOLD INDIVIDUALLY- - 10lb, 15lb, 25lb, 35lb, 45lb), Steel insert, strength training, Bench Press, Squats, Powerlifting High-grade Olympic Pro bumper plate used for strength training and Olympic lifting Rubber construction prevents damage to floors even when dropped Made of high-quality rubber and strong steel insert for incredible durability Inserts are bonded to the rubber prevent the collar from moving Provides secure fit and simple removal with precision machined metal sleeve