[Package]: The package contains 4 pieces of ceiling light plates, with 8 pieces of M4x18mm screws and nuts, 8 pieces of ceiling screws and 8 pieces of rubber plugs.[Material]: The ceiling plate brackets are made of metal and use a high-quality electroplating process. Its surface is electroplated, smooth, corrosion-free, corrosion-resistant, stable and durable.[Dimensions]: The size of the base plate is 105x18mm, the height of the side is 16.5mm, and the thickness is 1.5mm.[Bearing capacity]: If installed on suitable place, the lamp mounting bracket can bear about 5kg.[Usage]: This ceiling light can be used to fix a ceiling light with a diameter of 110-130mm. It is mainly used to hang home office ceiling lights, chandeliers, crystal lamps, etc. Dimensions: 105mm[Name] : Screw-mounted ceiling plate with accessories[Material]: Metal[Color]: Silver[Dimension]: Height: 16.5mmBottom plate: 105 x 18mmThickness: 1.5mmApplicable Lamp Panel: Diameter 110-130mm[Package]: 4 x Ceiling Light Plates 8 x M4x18mm Screws 8 x Screw Nuts 8 x Ceiling Screws 8 x Rubber Plugs This light mounting accessory attaches your lamp or chandelier to the ceiling and is often left out of the package. Attach this lamp to the ceiling to support your light. This lamp holder is very easy to install. We supply matching screws, nuts and rubber plugs. Just make sure the screws are firmly screwed into the ceiling or joists.[Note]:1. The roof plate bracket can safely support a weight of 5 kg. This only applies if the roof itself can handle all the weights. 2. We always recommend that all accessories are fitted by a qualified installer.