Bosch twist drill hss r din 338 reduced straight shank bosch 2608596672 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 135 x 108 x 160 mm d 12 mm bosch 2608596672 twist drill hss r din 338 reduced straight shank 135 x 160mm