About this item UNIVERSAL SIZE — 3 inch cut off wheels – Diameter 3 inch, Hole Diameter 3/8 inch arbor. Operating up to 25,000 RPM 80M/S. 3 inch die grinder cutting wheel can achieve simple grinding operations and good material cutting. Excellent Durability and Fast Cutting — The metal cutting wheel of the Silfon Angle Grinder is extremely aggressive and makes ultra-fast, burr-free cuts in metal, fiberglass and plastics. Selected Materials — The 3 inch die grinder cut off wheels cutting discs is made of proprietary alumina particles and high-quality resin, reinforced with high-strength glass fiber mesh on both sides, which can achieve a strong cutting action High-quality materials make it extremely long lasting and Faster & Preciser Cutting For alloy steel, stainless steel, HSS, iron, angle iron, cast iron, welds, aluminum, brass, bronze, etc Reliable Safety — SI FANG metal cutting discs comply with international standards and safety requirements such as EN 12413, ASM07. Please wear suitable protective equipment during the use of 3-inch cutting wheels and do not exceed the specified maximum speed