Name: 4inch Light Fixture Cross Bar - Set of 2 Our 2-pack universal light fixture cross bars are made ofElectroplated metal, really sturdy and secure, can attach close to ceiling light, wall light, pendant light, chandelier, ceiling fans, etc. Size: About 4inchin diameter, inner hole diameter & Screw Holes Quantity: 2 pcs light fixture crossbar 2 pcs green ground screws 2 pcs grounding pigtail 6 pcs wire connectors nuts 8 set mounting screws kit 4 set silver & black decorative nuts Colour:silver Material:Electroplated metal Package Contents: 2 set x light fixture mounting bracket Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.