Drill bits are used when working with drilling machines, milling machines, as well as hand drills. For crowns up to Ø31 mm. used LSS-1 holder, from Ø32 mm. - LSS-2 holder. The teeth are made of high-quality M42 high-speed steel, which contains 7.5 to 8.5 percent cobalt. Thanks to the variable teeth, work jams are avoided and higher productivity is achieved.