These plates are cut from certified AR/NMSOO steel, bead blasted and primed to make sure You get the highest quality gongs. Please follow industry safe practices with the use of any steel target and always wear ear and eye protection. The 12″ and 16″ models are 1/2″ thick plate and the 6, 8, and 10″ gongs are 3/8″ thick plates. All Products are backed by our customer service guarantee so you are satisfied. If you have never shot steel gongs, You don’t know the fun you are missing.