Suitability:
For all concrete and masonry materials, from perforated bricks to hollow blocks, metal, plastic, and glass materials etc.
For objects that are fastened with woodscrews and chipboard screws, such as wall mounting shelves, light wall cabinets, light brackets, towel racks, electric switches, lamps, mirrors, picture frames etc

It’s ideal to be used for building materials, even thin. It endures temperature(-40 — +80),rust,corrosion,aging and chemical afftect. Meanwhile it’s good at electric insulation,tensiblility,and high pressure. The structure designed with gear can prevent itself sliding in the hole