... Ground Material:High Speed Steel Point Angle:118,135 HSS left hand twist drill bits fully ground DIN338 bright finishLeft ... bit has a precision ground left hand spiral in HSS, designed for all steels. The left hand drill range also extends to ... left hand centre drills and spotting drills.Manufacturing process: Fully groundMaterial:HSS#4241,HSS#4341,HSS M2,M35,M42Standard:DIN338 ...