PREMIUM Tungsten Carbide Cutter Set: This set includes 8 of the most popular shapes in a matching case. With 1/4 inch shank, suitable for machining various metals and most rotary grinders. Excellent choice for precise metal removal when forming, leveling or porting cast iron, steel and other ferrous metals. ADVANCED TUNSTE MATERIAL: 100% raw pure tungsten carbide cutters with extremely long life, 10 times more durable than other HSS cutters and 200 times more durable than small wheels. Hardness can reach HRC70, sharp and sturdy. PRECISE DOUBLE CUT: The right and left spiral flutes together form a chisel-like cutting tooth. Combined with precision grinders, this precision ensures smooth operation, fast metal removal and a fine finish. WIDE APPLICATION: Widely used for metalworking, tool making, model making, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, cylinder head openings and carving. Include body shops, manufacturing shops, brake shops,