Made of recycled rubber with a stainless steel insert, the ETHOS 45 lb. Olympic Rubber Bumper Plate is less noisy than traditional iron plates with minimal bounce for added safety. High quality vulcanized rubber design lets you lift and drop without damaging your floors Less noisy than traditional iron plates with minimal bounce for added safety. Stainless steel inserts slide on and off weight bars with ease. Peel, chip and bloom-resistant for long-lasting use. Weight: 45 lbs. Diameter: 17.72’’ (IWF Standard) Sold as a single weight plate