Description: 【 High quality materials】: Anchors are made of high quality zinc plated carbon steel.High quality heavy hollow wall anchor assortment kit. 【Principle of use】: Used for setting cavity wall fixings into hollow stud walls accurately and quickly, hollow drive wall anchor expansion when installing, providing strong bearing capacity and safety. 【Feature】: High performance cavity fixings.Ease of installation, great strength, suitable for different kind of material. 【Expansion Design】: The anchors expand on two opposing sides as you tighten the screw, increasing holding power. Anchors Screws with the deep cross groove is not easy to slip when screwing, saving your energy. 【Wide Application】: Widely used for gypsum board, drywall, light brick wall board, etc. Work great on hanging all kind item on your home decor, such as Curtain installation, lamp installation, object fixing,picture frame, wall lamp, curtains, clock etc. Specification: Material: Galvanized Size Chart: Optional: 3.5cm/1.38inch 4.6cm/1.81inch 5.9cm/2.32inch Package Includes: 50 Piece Hollow Drive Wall Anchor Screws Note: Please allow slightly errors due to manual measurement and different monitors.