Bosch twist drill set hss co din 338 with straight shank bosch 2608587014 these hss co twist drill sets from bosch comply with din 338 and have straight shanks 19 piece probox metal drill bit set hss co din 338 cobalt alloy 1 10 mm bosch 2608587014 twist drill set hss co din 338 straight shank 1 to 10mm 19 pcs