20PCS Cavity Wall Fixings Anchors, M4 x 20 Hollow Wall Anchor Jack Nuts Expansion Nut Thins Fixings Dowels with Screws Hollow Wall Anchor for Hollow Plate, Plasterboard, Hollow Door

• [Material]: The cavity wall fixings anchors are made of carbon steel, with zinc plated on the surface, Support a fair amount of weight, good hardness and not easy to deform, rustproof and durable.
• [Strong Load-Bearing Capacity]: Specially designed heavy metal hollow wall anchor with sturdy screws, which can provide greater strength to support the weight of heavy wall hangings.
• [Easy to Install]: 1. Drill a hole the same diameter as the end of the metal retainer; 2. Slide the retainer into the hole and adjust the screw in the retainer; 3. Attach the mounting tool, squeeze the mounting tool to the back of the compressed fixing and remove the screw; 4. Insert the screw through the item to be fixed to the door and tighten with a screwdriver.
• [Wide Application]: Hollow door fixings suitable for fixing gypsum boards, widely used in dry walls, hollow bricks, thin walled or hollow walls, and very suitable for hanging curtain rods, lights, photo frames, coat racks, and power switches.
• [Strong] :Weight capacity of up good for applications such as and rack ,pictures, shelves, and artwork.

Feature: 【Firmly Mounted】Hollow cavity metal anchors fixings come with a bolt and hollow jack nut, when When the bolt is tightly pulled outward, the nut tightens with it, creating a petal shape on the plate and clamping the plate tightly to hold the item securely in place, which is not easy to fall off. 【Suitable for Hollow Materials】Hollow bolts anchors are specially designed for use with hollow materials that can be used with the plate with the thickness of 0-5mm/0.19in, making them ideal for hollow doors, hollow walls or hollow plywood. 【Easy To Installation】Hollow cavity anchors can be installed in just a few steps.1. Drill a hole the same width as the metal retaining nut. 2. Insert the anchors into the holes and adjust the screws in the anchors. 3. Clamp the bolts with a tool and tighten them outward until the nuts are completely closed and snug. 4. Secure the item to the nuts with the screws and tighten with a screwdriver. 【Premium Material】Hollow cavity metal anchors fixings are made of 4.8 grade Q235 carbon steel and iron with galvanized surface for good hardness and not easy to deform; the galvanized layer gives it good corrosion resistance and rust resistance for long term use. 【Wide Application】Hollow bolts anchors can be used for any shallow hollow plate with thickness of 0-5mm/0-0.19in that can be installed on metal sheet, hollow-door, hollow-wall, paneling, hollow plastic pipe and more for fixing objects, hanging objects, etc. Specification: Name: Hollow Cavity Metal Anchors Fixings Material: 4.8 Grade Q235 Carbon Steel, Iron Model: M4*20 Size: As Shown Package Included: 10 * Hollow Cavity Metal Anchors Fixings or 20 * Hollow Cavity Metal Anchors Fixings