Viowey CARBIDE BURR SET 1/4 SHANK INCLUDES SA, SC, SD, SL AND SF TYPE BURRS, SUITABLE FOR DEBURRING AND POLISHING CAST IRON, CARBON STEEL, ALLOY STEEL, WOOD ETC. MATERIALS. INCLUDES SA, SC, SD, AND SF TYPE BURRS. PACKED WITH A PLASTIC CASE FOR SAFETY STORAGE AND PROTECTION. Product Specifications： SA-5: Cylindrical shape 1/2" x 1"-1/4"Shank SA-3: Cylindrical shape 3/8" x 3/4"-1/4"Shank SC-1: Cylindrical radius end 1/4" x 5/8"-1/4" shank SC-3: Cylindrical radius end 3/8" x 3/4"-1/4" shank SD-1: Ball shape 1/4"X7/32"-1/4"shank. SD-3: Ball shape 3/8"X5/16"-1/4"shank. SF-3: Tree shaped radius end 3/8" x 3/4"-1/4"shank SF-5: Tree shaped radius end 1/2" x 1"-1/4"shank Please Attention: 1. Always ensure your burr shank is well inserted into your collet and clamped down tightly. 2. Wear an eye mask to protect your eyes from filings. TUNGSTEN CARBIDE BURRS ARE WIDELY USED FOR METALWORK, JEWELRY MAKING, WOOD CARVING, WELDING, CHAMFERING, CASTING, DEBURRING, GRINDING.