Hollow wall anchors are made of metal materials, offering high stability and durability for long-term use. Dimensions: Screw is 6mm x 25mm; metal cavity fixing size is approximately 12mm x 17.5mm. These metal wall anchors fit well in shallow hollow panels. To install, simply insert the hollow door anchor nut into the hole, place the screw through the fixture, and tighten to expand the anchor securely. This set includes 12 expansion screw petal nuts, providing a sufficient quantity for everyday drywall anchoring needs and added convenience. The hollow door anchor set can be used to hang items such as curtain rods, lamps, picture frames, and wall cabinets, making it a practical household essential. Material: Metal Color: As shown Package Contents: 1 set x Hollow door anchors Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3cm.