The Rdigid 4-1/2 in. Diamond Turbo Cup Wheel is a high-quality grinding wheel designed for metalworking applications. With a straight cup grinding wheel type and a grit of 14, this wheel is capable of achieving precise and efficient grinding results. Made with diamond abrasive material and a wheel thickness of 2 inches, this cup wheel has a diameter of 4.5 inches and can operate at a maximum speed of 13,300 RPM. The 5/8 inch-11 arbor hole size ensures a secure fit on the grinding machine, making it a reliable tool for professionals in the metalworking industry.