Material - This industrial hook is made of iron metal, galvanized on the surface, and the screws are made of stainless steel. Load Capacity - The circular base plate has a larger and more uniform force surface, the lamp hook can withstand up to approx. 100 kg. Application - The hook can be used to hang ceiling fans, mosquito nets, lanterns, ceiling lamps, plants, cages, baskets, pendants, chandeliers, crystal lamps, light fixtures, etc. Material: Metal (Screw: stainless steel) Dimension: Base plate diameter: 90mm Height: 35mm Package: 2 x Round Base Ceiling Hook Kits Installation Steps: 1. Before installing the ceiling hook, determine which hole to install. It would be better to choose one of the holes in the correct direction of the hook head and then choose two other holes to form a solid triangle. 2. Place the hook in the desired hanging position and mark the location of the mounting hole in the ceiling. 3. Drill the hole according to the shown position, then press the expansion plug into the hole. 4. Align the holes in the base plate with the holes in the ceiling, then tighten the screws. Note: 1. The above dimensional data are all manual measurements. Please allow 1-3 mm error. 2. The installation procedure for the hook is very simple, but we still recommend that you have it installed by a professional.