The one-piece Rapid Rod hanger is an all threaded fastener system used for suspending steel threaded rod. This hanger is suitable for overhead installations such as, suspending cable tray, pipe hangers, strut or conduit. Wood Rapid Rods can be installed with a screw gun or hammer drill. The concrete Rapid Rod hangers can be installed with an adjustable torque, battery powered screw gun or hammer drill. Both the concrete and the wood versions are UL listed and FM approved.