While other companies are trying to perfect hydro gyros and headsets to allow spinning your bars until your hearts content, Acros wants to stop your bars from doing a full 360. The Block Stop headset features a tongue and groove system which limits your bars from trying to smash into your frame when something goes south. Movement is limited to 90° in either direction, so it wouldn't quite keep your dual crowns stanchions from smashing into your frame, but it should work with everything else.
Keep an eye on www.acros.de for more information
