Anybody tried A-Henkel rackets?
see http://www.a-henkel.com/

Probably not. I posted an identical inquiry six months ago about these interesting looking racquets with the "bubble shaft" feature, but no one responded. Good luck.

Tony, there have been no takers on this forum who have a Henkel racquet. Maybe one of us will have to buy one to try it out. I'll flip a coin... I call heads....Oh, it landed on tails, you get to buy one. ;)