... .high speed steel The picture above is Hss Streight Shank Twist Drill Material: HSS4341,HSS9341,M2(6542), Point angle: 118degree,135 degree ... kinds of HSS twist drill bits,the details include:1. Standard: DIN338,DIN1897,DIN340,ANSI B94.11M,DIN3452. Material: HSS4241,HSS4341,HSS9341 ... .malleable iron3.sintered metal4.non-ferrous metals5. wood and so on