Carbide Burrs Set 5Pcs With 1/4''Shank Sb-5 Sc-5 Sf-5 Sh-5 Sl-4 Double Cut Solid Shape?included SB-5,SC-5,SF-5,SH-5,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