The Slim Claw to Mega-Coupler 1/2 CS makes an easy job of hanging a lamp bar to truss. Pre-fasten the Mega-Couplers to the lamp bar. When on site for the event, simply hook the Slim-Claws onto the truss/pipe and fasten the link and handles. The Slim-Claw supports the load while the link is being secured. The Slim-Claw will fasten to both 1-1/2" pipe (1.90" OD) and 2" OD truss tube. The Slim Claw has a 3-1/2" T-handle, so no tools are required to fasten to the pipe. The Mega-Coupler has solid wing nut tabs that are stronger than regular steel wing nuts. The Mega-Coupler fastens from (1-1/4" Pipe) 1.66" OD to 2 " OD truss tube.