A comment
Tired of constantly asking a neighbor for a hammer drill, I decided to buy this "miracle for mortising" for myself. On the advice of the same neighbor, I bought a Zenit ZP-950 hammer drill. The quality of the device is excellent. There is nothing to hold together, not backlash, there are no huge gaps, like Interskol punchers. The case is made of strong cast plastic (the perf fell from a high step-ladder, there was no crack on the case).
The device is powerful, they easily dismantled the brickwork and drilled 11 holes in the slabs between floors. In the kit there are 3 good drills, peaks, an extra handle, a chisel (alas, it got dull during the first use, so buy a new one right away). For the money spent on the punch, I’m not worried, the punch perfectly justifies its price.
Minuses
a bit of poor quality, a case made of fragile plastic.