1.Description:Stainless Steel Drill Bits 2.Material:HSS Cobalt 5% 3.Technics:Fully Ground 4.Degree:135 5.Packing:Plastic box 1.Description:Stainless Steel Drill Bits2.Material:M35 Cobalt, Composition:W6Mo5Cr4V2+Co 5%3.Technics:Fully Ground4.Degree:1355.Size:0.2mm to 20.0mm6.Packing:Paper box, Plastic box7.Used for Drilling Metal,Iron,Stainless Steel etc.