10Pcs Carbide Burrs Set With 1/4'' Shank Double Cut Solid Power Tools Tungsten Shape?included SB-5,SB-3,SC-5,SC-3,SD-5,SE-3,SF-5,SG-5,SG-3,SL-4 Multi Purpose: Widely used for metalwork, tool making, engineering, model engineering, wood carving, jewellery making, welding, chamferring, casting, deburring, grinding, cylinder head porting and sculpting Good Quality:Good processing quality, high finish. Can be processed into a variety of high-precision shape mold cavity Long Life: Made of heat-treated Solid tungsten carbide YG8 that lasts 8 times working life Durability than HSS tool?Suitable for machining various kinds of metal material including ?HRC65 hardened steel Packaging?Packed with a plastic Box for safety storage and protection