Standard Mandrel Bit Shank Size 332 Color Silver Quantity 5 Pieces MATERIAL Made with the tungsten carbide and known to be one of the toughest materials on the market Tungsten carbide is rust resistant corrosion resistant and durable for longer lasting use DESIGN The efile nail drill bits shank is the diameter of 0254 to 0262 and will fit 332 shank size openings on the efile nail drills USES Use with various sanding band grits to smooth and buff the nail nail preparation polishing and grinding with the essential efile nail drill bit MEASUREMENTS Length 15 Inches Barrel Size 04 Inches x 02 Inches