The Forney 71799 6-Inch Type 1 aluminum oxide metal cutting wheels. Designed for metal cutting, metal abrasion, body work, metal fabrication and general repair work. Used on ferrous materials. Designed to be used on die grinders, angle grinders and circular saws. 6-Inch (15. 24 cm) by 1/16-Inch (1. 59 mm) with 5/8-Inch (15. 88 mm) arbor. A46T-BF with 14, 000 Max RPM.