The Norton 4in. Metal Grinding Wheel has a Type 27 Raised Hub. Made for a wide range of grinding, shaping and cutting jobs in home workshops, farms and machine shops. Aluminum oxide is recommended for all types of ferrous metals. Wheel dimensions are diameter x thickness x arbor. Application: Metal, Arbor Size: 5/8, Disc Type: Type 27, Max. RPM: 13,500 rpm, Wheel Diameter: 4 in, Wheel Thickness: 0.25 in, Wheels (qty.): 1
- Diameter – 4 in.
- 0.62 in. Arbor.
- Depressed center.
- Aluminum oxide metal.
- Max rpm – 15,280.