Bosch twist drill set hss co din 338 straight shank bosch 2607019925 these hss co twist drill sets from bosch comply with din 338 and have straight shanks 10 piece robust line metal drill bit set hss co 1 2 3 4 5 6 7 8 9 10 mm din 338 135 bosch 2607019925 twist drill set hss co din 338 straight shank 1 to 10mm 10 pcs