With the new Busch beading tools you will find out that it gets even better.
Please observe the optimum formed high-gloss calotte and theroundedcircumferential edge on the  working part. The shank can easily be shortened at the predetermined breaking point if you need to be closer to work.

Shank-Ø: 2,6 mm
Total length: 60 mm
Shortened length: 50 mm