High Durability: Made with premium aluminum oxide for long-lasting performace and consistent grinding power. Reinforced Safety: Have 3 layer high strengthen fiberglass nets - more safety during using process Fiberglass mesh layers enhance strength and reduce t he risk of breakage during use. Versatile Compatibility: Works with angle grinders and bench grinders on ferrous metals, cast iron, and steel. Stong stainless steel middle ring on disc. Anti-Corrosion and rust.