The EZ Aim® Hardrock AR500 Target is made of 1/2-inch thick armorplate steel to withstand the impact from high power hunting rifles. The white powdercoat finish shows bullet impacts. EZ Aim® Hardrock gongs have three connection points: two at the edge for attaching chains or straps and one in the center for gong hook attachment: Dimensions 6-inch diameter and 1/2-inch thickness.