- Country of manufactureRussia
- Weight0,2 kg
Drills spiral on a tree of BPS are made of carbonaceous steel their shnekovy part is executed in the form of a drill with Levis's spiral, the cutting part is executed by the principle of a perochny drill, a shaft okontsovan by a ring for an insert a vorotka. Drills are intended for drilling of openings in soft materials manually, with application a vorotka in the form of a core.
Diameter of working part 25 of mm, length of the drilled through opening of 450 mm, total length of a drill of 480 mm.