1.Type:center drilll bit 2.Material:HSS,HSS-E,etc 3.Coating:Tin,Bright,Ticn,etc 4.Complete in sizes 5.Angle:90,120 deg center drilll bit Features: 1.Drill bits:center drilll bit2.Material:HSS,HSS-E etc3.Coating:Tin,Bright,Ticn,etc4.Complete in specification5.Type:center drill bit6.Size:Standard or as require7.Angle:90,120 degree If you have any question, please feel free to contact with us.