Hollow drilling system for boring holes in brick-work or concrete, has exhaust, hollow drill with driving axle, which can be withdrawn from suction system without use of toolsHollow drilling system, has an exhaust, a hollow drill (16) with a driving axle (4) can be withdrawn from the ...
Hollow drilling system for boring holes in brick-work or concrete, has exhaust, hollow drill with driving axle, which can be withdrawn from suction system without use of toolsHollow drilling system, has an exhaust, a hollow drill (16) with a driving axle (4) can be withdrawn from the ...