With the Phantom 19.171 hss twist drill bit set, you achieve precise drilling in aluminium, copper, and plastics. This 41-piece set covers diameters from 1 to 5.9 mm in 0.1 mm increments, ensuring you always have the exact size required for core and clearance holes. Designed to din 338 standards with a 130° point angle and type w flute geometry, it delivers efficient chip evacuation to prevent clogging in ductile materials. Featuring a standard cylindrical shank for regular drill chucks, every bit stays neatly organized and protected within the durable storage case.