[Shape] Double Cut ball shape SD-5, Size: 45mm Shank length, 1/4inch shank diameter, 1/2inch cutter diameter, 0.45inch length of cut.[Durable] Made of heat-treated tungsten carbide YG8that lasts 10 times working life than HSS , suitable for machining variouskinds of metal material including less than or equal to HRC65 hardened steel.[Versatile] Widely used for metalwork, tool making, engineering,model engineering, wood carving, jewellery making, welding, chamferring,casting, deburring, grinding, cylinder head porting and sculpting.[Target] This is an essential bit for metalworker DIYcarving fans, easy to grasp and use, safe and reliable.[Packaging] Packed with a transparent plastic tube for safety storageand protection.Colour: SilverMaterial: CarbidePackage Contents:1 * Burr BallOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.