Overall length 55 - 69mm, shank - 6mm (1/4"), tip outer diameter - 10mm, tip blade length 8 - 25mm High Quality - Made of high quality heat treated tungsten carbide to ensure its hardness can reach HRC70; Multi-Purpose Tool - Ideal for detailed work, widely used in metalworking, woodworking, model engineering, wood carving modeling, jewelry making, welding, chamfering and shaping, deburring, sanding, etc. Easy to Use - Generally can be used with electric or pneumatic hand tools (can be used even on machine tools, the speed of electric/pneumatic tools is generally about 6,000-50,000 rpm; 3) Shapes include: pointed shaft, conical tip, cylinder with cup end, cylinder with bulbous tip, Spherical. Suitable for most DIY jobs such as detailing, cutting, carving, engraving and painting. touch-up and finishing. Note: There may be a slight color difference from the product image