Pack: There are 6pcs large 4 holes strap hangers and 24pcs screws.,Material: The picture hangers are made of high quality iron,will not deformation and wobble; Galvanized surface to prevent corrosion and rust.,Note: The weight capacity of the picture hanger should be more than what your item weighs.This is to ensure secure hanging and prevent falling.,Heavy Duty: The upgraded heavy duty 4 holes D-Ring hangers are thicker, stronger and more sturdy,which can support up to 200 pounds.,Service: If you have any questions about our products, please feel free to contact us. We will definitely give you a satisfactory solution. Happy shopping!