Material: Made of high quality iron, high hardness, strong toughness, anti-oxidation, sturdy and durable, super carrying capacity.The bottom is equipped with a wear-resistant and scratch-resistant rubber pad, which can effectively prevent the floor from being scratched. Adjustable Design: The adjustable foot of the bed can be adjusted from 7 inches to 13 inches, you can adjust to a comfortable height according to your needs to improve sleep quality. How to install: When the bed frame has holes, directly align with the double holes, put holes to adjust the distance, then tighten it. When there is no hole in the bed frame, place the foot of the bed and the frame crosswise, place the joint on the bed frame corresponding to the foot of the bed, tighten the bed frame, insert theto adjust the distance, then tighten. Usage: connt for beds, sofas, desks, furniture, cabinets, shelves, etc.