... .high quality 2.high speed steel Hss Streight Shank Twist Drill is used to process the hole of steel component. 1 ... Twist DrillProduct Description:We produce all kinds of HSS twist drill bits,the details include:1. Standard: DIN338,DIN1897,DIN340,ANSI B94 ... drills, 1/2 shank drills,Wood working drill bits, Flat wood boring bitApplication:1.drill cast steel2.malleable iron3.sintered metal4.non-ferrous ...