Bosch twist drill hss r din 338 reduced straight shank bosch 2608596659 these hss twist drills from bosch comply with din 338 and have reduced straight shanks metal drill bits hss r din 338 with reduced shank 18 x 130 x 191 mm d 12 mm bosch 2608596659 twist drill hss r din 338 reduced straight shank 18 x 191mm