The adjustable center drill works very well. However, the label is wrong (which I had found after the hole was drilled).
The center drill itself has a diameter of 14mm. Drilling had a 15mm hole and had him or the Dies also set - 1mm supernatant (as labeled 15mm). Through this 1mm supernatant in circles drilled However 2mm - what then was a 16mm hole.
Because of the false label of Scala one point less.
