The metal expansion bolts for drywall are designed to provide a secure and stable solution for hanging items on hollow walls. The unique nut design expands within the cavity, creating a strong hold that can hold various weights. These anchors are ideal for use in plasterboard, drywall, and other hollow wall materials. Features -Color:Silver -Material:Carbon steel -Size:2.30X1.10X1.10cm/0.90X0.43X0.43in -Thread: -Outer Diamter: 8 mm -Inner Diameter: 4 mm -practical material: constructed from carbon steel, these anchors are practical and resistant to wear. -ideal for hollow walls: ideal for securing various workpieces in hollow walls, providing a strong and stable hold. -Effective grip: the expansion nut design ensures the anchor bolt expands on both sides when the screw is tightened, enhancing grip strength -Stable fastening: the fastening components are firm and do not easily loosen, making them ideal for -Quick and easy installation: the hollow dowels are heavyduty and easy to install, making the process quick and efficient Package list: 15 x hollow door fixing anchors