【Perfect Size】Outer Diameter:4.5 Inch (115mm) Inside Diameter:7/8 inch Thickness:3/64 inch. Operating up to 13,300 RPM. Suitable for most angle grinders, air cut off tool and electric cut off tool | 【Premium Materials】GoYonder metal cutting discs are made of aluminum oxide grains that are durable and safe. It also provides aggressive cutting action and longer service life. | 【Multiple Applications】Our cutting wheels are ideal for cutting iron, plastic, steel, stainless steel, fiberglass as well as all other ferrous metals. | 【High Performance】3/64" Thickness Ultra-thin design for fast and precise cutting performance with a minimal burr and reduced material waste. | 【Package&Safety】 Package includes 10 pieces of GoYonder cutting wheels（Please use all necessary protective gear when you use these cutting discs）