PREMINUM MATERIAL The cutter set is made of high quality tungsten carbide. Shank Diameter: 3mm (1/8""); Cutting Edge: 6mm (1/4 ""); Total Length: 50mm. Please check the size before you buy. DOUBLE CUTTING HEAD Suitable for deburring and polishing iron, steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals as well as marble, jade, bone. SUITABLE FOR MOST TOOLS Generally with hand-held electric or pneumatic tool drive (can also be used in machine tools). The speed of the electric or pneumatic tools is usually 6000 to 50,000 revolutions per minute. Great for fine details, widely used in metalwork, tool making, model making, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, etc. PACKAGE INCLUDES 10pcs * Wood Carving Tool Set Specification: Suitable for deburring and polishing metal / non-metal materials up to HRC70 hardness Shape: cylindrical, sphere, conical, pointed tree, inverted cone, round tree, oval, flame, and so on Material: Tungsten Carbide Total length: 42-50mm (as shown in the pictures) Maximum cutting length: 13 mm Head diameter: 6 mm Shank Diameter: 3mm