Flush mount socket is constructed of injection molded nylon & ABS. Installation is as easy as drilling a 1-1/8" hole, inserting the socket body, tightening the locking nut, and connecting the wires. Plug features stamped brass contacts, as well as a 3 amp fuse and an LED light to indicate when powered. Maximum: 12VDC, 16A. Description Socket, Cap & Plug A 1-7/16" B 3-3/16" C 13/16"