HSS straight shank drill bit set HSS drill set drill set This style of rolling black drill bit set is packed in red plastic box. ... series) DIN 340 (long series) DIN 1897 (stub series)5.Diameter:1mm-20mm6.Flatted shank prevents slippage in three ... taper shank drill,SDS drill bits,center drills,step drills,masonry drill,,wood working drill,flat wood bit,Hss reduced shank twist drills,hss hex shank ...