Application--The deep thread design of the screw can firmly connect gypsum board, brick, wall and so on. Can be use for gypsum wallboard with that size of 3/8 inch, 1/2 inch or 5/8 inch of drywall, and is very suitable for hanging various article on the wall at home, such as photo frames, wall lamps, curtain, clocks, plants, televisions and cabinets.