It is a small part in showcase system, Hammerhead Screw. It is used for folding extrusion. There are two grooves for hammerhead screw to put panels or hook up fixed objects . This kind of screw can be easily removed and is easy to install. If you have this requirement, LingTong will equip the screws for you. It weighs 0.008kg per each. Each screw can carry up to 10kg. It is made of steel. The products of LingTong are green and environmentally friendly. If there are some relative needs, LingTong will provide the best service for you in exhibition construction.