DescriptionThe anchor is made from steel and plastic that resists corrosion, is nonconductive for anchoring electrical components, and is low-friction to facilitate screw installation. Before the screw can be inserted into the anchor to create a secure hold, the included key is used to open the anchor's wings behind the material. The fins on the anchor head grip the mounting material to prevent when a screw is inserted, and the anchor will stay in place if the fastener is removed, facilitating fixture and screw changes.Features- Color: White. - Material: Plastic and steel. - Size: 4.30 x 3.20 x 0.70cm/ 1.69 x 1.26 x 0.28 inch. - Constructed from durable plastic to last for years. Self-drilling screws kit is made of steel and plastic. - Useful for different needs, hanging bathroom, kitchen accessories, shelving, light fixtures, mirrors, picture frames, and more. - Residential drywall anchor provides a firm hold to thick drywall. - Anchor affixes to the wall before adding the bolt and fixture, allowing one-person installation and fixture changes. - The split in the ribbed anchors expand on two opposing sides as you tighten the screw, increased holding power.