Set of 19 cobalt metal drill bits DEDRAS with titanium nitride coating and cylindrical shank. Thanks to the use of 5% cobalt, the drill's resistance to thermal damage has increased. The ground spiral ensures a low coefficient of friction and evacuation of the excavated material from the hole, reducing the risk of chips sticking to the drill and increasing drilling efficiency. The design minimizes vibrations, offering greater durability. The drill angle of 135° ensures perfect centering. The drill provides 40-60% faster drilling compared to standard HSS drills. It is intended for drilling steel, cast iron, aluminum, copper, and brass. Manufactured according to DIN338 standards. Everything is packed in a convenient case.