I umzäune a plot with 80 recycling piles, 1.30m long, and have a lot of stones and sometimes even construction debris, also for many years by its roots of hazelnut kink and plums. Per hole about one minute !!!!! Operated without using excessive force, slip clutch can be kept easily. Assembly very simple, two-stroke> easy filling. Contact with the seller very friendly, very fast delivery, well packaged, detailed instruction manual. And for the price I would have to borrow an equivalent drills only for two days. Absolute buy recommendation.