Twin cluster ceiling kit, used to install a new light fixture, 250v rated , for use with 2 medium base bulbs, 50w maximum, holds a glass diffuser, not included, which is held in place by the brass finish lock up cap & rubber washers, includes 1 each of the following: canopy, 2 bulb cluster socket with 18 awg pre-wired 8″ insulated leads, 4″ offset crossbar & brass finish lock up cap, 2 each of the following: 8-32 x 1/2″ mounting screws & 1/8 ip rubber washers.