The Self-locking Easy hook is a fast and simple way to attach devices to a truss. The special design with lateral screw prevents it from hooking itself to the devices or to the cross beam. The large wing nut makes it easy to lock the coupler in place. **This coupler is compatible to following truss systems: ![]([{$oViewConf->getCurrentHomeDir()}]out/pictures/wysiwigpro/kompatibilitaet/5073-1.jpg)**