2 sets of universal crossbars are made of high-quality metal steel: durable and rust-proof, ensuring safe use, reliability, and longer service life. This light fixture mounting bracket adapter is designed to connect light fixtures and canopies to electrical junction boxes. The 2-pack meets multiple needs and can be used to install wall lights, near ceiling lights, LED lights, pendants, chandeliers, and bathroom vanity light fixtures. 4-inch diameter universal mounting plate fits most ceiling lights. Includes ground screws, wire nuts, and rail mounting screws for easy installation without the need to purchase additional hardware. Accessories color is random and cannot be specified. Colour: Silver Material: Metal Size: Approximately 10.1 cm in diameter Package Contents: 2 x light rails 8 x screws 14 x nuts Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight color variations between the item in the picture and the actual product. Measurement allowance is +/- 1-3 cm.