Size - Outer Diameter: 75mm / 3"; Arbor: 10mm / 3/8"; Thickness: 1.2mm / 1/20". Suitable for most electric angle grinders. Material - The cutting wheel is made of high-hardness aluminum oxide, which has excellent wear resistance and high-temperature resistance and can maintain stable cutting performance in a variety of environments, and a long service life; Aluminum oxide material provides accurate and powerful cutting for the cut-off wheel, which is very suitable for repeated precision cutting of hard metals. Feature - These angle grinder cutting discs are reinforced with double-layer reinforced fiberglass mesh for added safety and durability; the 1/20-inch ultra-thin metal cutting wheel provides burr-free and precise cutting, avoids metal heat burns, and reduces material loss during cutting, achieving powerful, efficient, fast and reliable cutting. Application - Tough cutting discs are designed for the effective cutting of a variety of metals including carbon steel, stainless steel, pipe, tube, angle iron, cast iron, alloy metals, steel flat bar, cast iron, copper and all other ferrous metals as well as fiberglass, plastic, and wood. Note - To ensure matching, please select the appropriate aluminum oxide cut-off wheel specifications according to the specific cutting requirements and material properties. When using aluminum oxide cut-off wheels, please wear personal protective equipment such as safety glasses, masks, gloves, etc. to ensure safety.