ADJUSTABLE HEIGHT]: Each adjustable furniture leg has a minimum height of 18cm and is height adjustable up to 12 inches (30cm) to accommodate very large heights. The total weight capacity of the 4 legs is approximately 300 kg (661 lbs). EASY INSTALLATION:Bed support leg installation steps:1. Prepare screwdriver. 2. Secure the location and holes for installation. 3. 3. Align the screws with the holes and tighten them. 4. 4. Adjust the height by manually rotating the metal furniture legs. Multi-Function:4 Pieces Adjustable Furniture Legs are suitable for tables, coffee tables, sofas, cabinets, footstools, ottomans, chairs, TV stands, nightstands, double chairs, beds, desks, dressers, shelves, bookcases, great for DIY furniture or replacing the round furniture legs on old or damaged American furniture. METAL MATERIAL:Black furniture legs are made of cold rolled steel with painted surface, presenting a glossy black color. Durable, not easy to rust, strong bearing capacity, more stable. Thickened non-slip base ensures the ground is not scratched and reduces noise. Packing List:4 X Metal Furniture Legs(7.08 inch - 12 inch),16 X Mounting Screws. Multiple sizes are available. If you find the product damaged or parts missing, please contact us for free replacement.