High Quality] The installation tool is made of high quality solid metal with a non-slip rubber grip and anti-slip protection. [dimensions] approx 16.3cm x 13cm x 2 .7 CM / 6.42 Inch x 5.1 Inch x 1.06 Inch. Weight about 390 grams. [Features] The hollow wall anchor can be easily extended when installing, providing strong bearing capacity and safety. [easy to use] Just drill (or insert the anchor into the plasterboard, unscrew the screw about 0.64 cm, to install the tool and press it in. This tool ratchets and pulls the screw to enlarge the anchor perfectly. [wide application] suitable for dental caries anchor plasterboard fixing , widely used in plasterboard, hollow block, plaster, tiles, ideal for hanging curtain rods, lamps, photo frames, hangers, power switches.