The anchor consists of a removable machine screw that's threaded into a metal sleeve with five expansion legs. As the screw is tightened, these expansion legs expand tightly against the back of the wall. Thus, providing strength, strong hold and even load distribution to keep your fixtures safely secured to the wall. Features - Color: Silver.- Material: Steel.- Size: 5.00 x 1.50 x 1.50cm/ 1.97 x 0.59 x 0.59 inch.- Specially designed heavy duty steel hollow wall anchors with screws to provide greater strength to support the weight of heavy wall hangings. - The expansion legs ensure even load distribution and the large flange prevents pull into the base material. - The anti-rotation barbs secure fixing during installation for superior tight grip and strong hold. - Heavy-duty cavity wall metal anchors are available in various sizes for all your needs.- The anchor consists of a removable machine screw that's threaded into a steel sleeve. Packing list: 20 x bolts (4 x 38)