Bosch twist drill set hss tin din 338 cylinder shaft bosch 2608587019 these hss tin twist drills from bosch comply with din 338 and have straight shanks 25 piece probox metal drill bit set hss tin titanium coating 1 13 mm bosch 2608587019 twist drill set hss tin din 338 straight shank 1 to 13mm 25 pcs