2. The presence of several working modes. Basically purchased perforators that have 2 or 3 working regimen. For simple drilling, the usual drill function is used. For enhanced drilling, the punch works in the same way, but with a blow. The third most powerful perforator regime is Doling. It is used in the destruction of different materials when dismantling finishing and facing materials or when deepening the wiring. You will be interested in renting a power tool of St. Petersburg.