... Left Hand Twist Drill Bits Standard:DIN338 Process:Fully Ground Material:High Speed Steel Point Angle:118,135 HSS ... left hand twist drill bits fully ground DIN338 bright finishLeft hand drill bits are used when ... screws! The left hand drill bit has a precision ground left hand spiral in HSS, designed for all steels. ... Finishing: Gold HSS left hand drills,fully ground,Amber finish,DIN338