●Nut inserts-- these screws are suitable for both home and commercial use, making them versatile and practical. ●Jack nuts for hollow wall-- the screws are available in a variety of sizes, ensuring that there is a for any door anchor. ●Wall anchor-- the installation process is simple and easy to understand, allowing you to quickly install the door anchor. ●Expansion nuts-- the hollow design ensures that the screw can be easily tightened and loosened as needed. ●Hollow wall anchor-- made of durable metal materials, our expansion screws can be used for a long time without damage.