For the uninitiated enough, but also not always satisfactory

Certain information I simply missing in the operation. It is probably the maximum number of revolutions specified, but you should at too small hole, do not try with a larger number of the correct (the clue is in my opinion very important)!

The attachment is well regulated and makes eg work on plasterboard no problems, but in wood there was partly an imbalance and the holes but very frayed out.

Data

Seven Bohrkränze: 46, 53, 59, 66, 73, 82, 94 mm
Max. 1500 revolutions per minute
Cutting depth 30 mm

In the oft product you have to unfortunately cut back, the recording itself is usually carried out only through drills, some cordless screwdriver can not just take these. The result can vary greatly through the materials that you want to edit. For the price you can get better in my opinion.