4″ (101.6mm) x 1/32″ (.79mm) a60t-bf type 1 steel cutting wheel with 3/8″ (9.52mm) arbor. aluminum oxide metal cutting wheel. designed for metal cutting, metal abrasion, body work, metal fabrication and general repair work. used on ferrous materials. designed to be used on die and air grinders only. quantity discounts available. iso 9001 certified. wheel size: 4″ thickness: 1/32″ arbor: 3/8″ spec: a60t-bf max rpm: 19,100 tool type: die/air grinder