SpeTool Carbide Rotary Burr Set 1/4 Inch Shank For Die Grinder Drill Double Cut With Aluminum Pack 8Pcs/Pack 8-piece Double Cut Carbide Rotary Burr Set High Grade Tungsten Carbide Made Wide Range of Uses Includes Body Shops, Fabrication Shops, Brake Shops, Industrial Shops, Die Manufacturers. 1/4inch Shank, 8 pcs per pack Pack in Aluminum With EVA Protection Fit for: Dremel, Dewalt, Makita, Decker, Hitachi, Ryobi, PORTER-CABLE, Craftsman which fit for 1/4(4mm) Shank