XMark Olympic Bumper Plates, 2" Stainless Steel Insert, Olympic Weight Plates, Weightlifting, Strength Training, Powerlifting, Sold in Pairs and Sets One pair of 25 lb. XMark superb quality Olympic bumper plates - Total weight 50 lbs. Encased in an environment-friendly 60 percent recycled rubber coupled with synthetic rubber for added tensile strength Designed with a 2" stainless steel insert allowing Olympic bars will fit snugly Rugged and solid construction makes this weight lifting plate virtually indestructible