Ceiling canopy hardware mount crossbar kit includes:
One 4-1/8" crossbar, tapped 1/4IP with ground screw
One 1/4 IP x 1/8IP 1" tall hickey
One brass 1/4M to 1/8F reducing bushing
Two 8-32 x 1/2" long slotted brass plated screws
One 1/4 IP x 5/8" long nipple
One 1/4IP x 1-1/2" long nipple
One 1/8IP x 1-1/2" long nipple
One 1/4F nut
One 1/8F nut
4-1/8" crossbar kit comes with 1/4IP tapped crossbar with ground screw, 1/4IP x 1/8IP 1" tall hickey, brass 1/4M to 1/8F reducing bushing, 2 pieces 8-32 x 1/2" long slotted brass plated screws, 1 piece each of 1/4IP x 5/8" long nipple, 1/4IP x 1-1/2" nipple, 1/8IP x 5/8" long nipple, and 1/8IP x 1-1/2" long nipple, 1 piece each 1/4F and 1/8F nuts.