2 sets of universal crossbars made of high-quality metal steel: durable and rust-resistant, ensuring safe use, reliability, and extended 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, 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. Accessory color may vary and cannot be specified. Color: Silver Material: Metal Size: Approximately 10.1 cm in diameter Package Contents: 2 x light rails 8 x screws 14 x nuts Only the items listed are included; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.