XIANQI High Value Combo Pack, reusable plastic cabinet, to hang tables, mount shelves, attach hooks, hook rails and other objects to the walls. Nylon ribbed ankles (Plastic) work with different sheet metal screw diameters. Ideal for anchoring in concrete, brick or wall. Anchoring is resistant to corrosion. A pre-pierced hole is necessary. Self-drilling steel screws of high quality anch anchors made of plastic, corrosion resistance, anti-aging, good tenacity. Suitable for a Use on small projects, hang bathroom / kitchen accessories, shelves, luminaires, mirrors, photo frames, and more. To hang photos, fix shelves, attach brackets, hook rails and other items to the walls. Delivered in Storage box.#6-#8 #6-#8 #6*1" #10#12 #12-#14 #10*1-1/2" Packing list: 1 set of screws (400pcs) Plastic dowels are one of the most universally used ankles on the hardware market. They can be used with most types of screws. 1.Perice a pilot hole in the wall. 2. Insert the plastic anchor screw into the dry bulkhead. 3. Insert the screw through the object you need to secure and insert it into the plastic anchor screw. 4. Turn clockwise up to this Features and advantages: The plastic anchor screw has apparatus wings with 2 expansion points for Avoid rotation of the anchor when the screw is inserted. Tools needed Screwdriver Perfect for: Room lighting bath, curtains, electric panels, fire alarms, ornamental luminaires, shelves Features and advantages: The plastic anchor screw has apparted wings with 2 expansion points To avoid the rotation of the anchor when the screw is inserted. Tools needed Screwdriver Perfect for: Lighting of Bathroom, Curtains, Electric panels, Fire alarms, Ornamental lighting, Shelves