The RIDGID 4-1/2 inch Diamond Turbo Cup Wheel is a high-quality tool designed for metalworking applications. With a 5/8 inch-11 arbor hole size, this straight cup grinding wheel features a 14 grit diamond abrasive material and a 4.5 inch wheel diameter. The wheel thickness of 2 inches and a maximum speed of 13,300 RPM make it suitable for efficient and precise grinding tasks. Ideal for professionals in the CNC, metalworking, and manufacturing industries, this cup wheel offers reliability and durability for various grinding operations.