... Drill is used to process the hole of steel component. 1.high quality 2.high speed steel The picture above is Hss Streight ... Description:We produce all kinds of HSS twist drill bits,the details include:1. Standard: DIN338,DIN1897,DIN340,ANSI B94.11M ... shank,rainbow etc.6. Shank: Straight shank drills, Taper shank drills, 1/2 shank drills,Wood working drill bits, Flat wood boring bit ...