These screen latches are constructed of aluminum and come in a gray finish. This item includes steel ball head screws that act as keepers for the aluminum latches, and they feature slotted heads for easy installation. These latches are used on wooden single and double hung windows with aluminum screens. They install easily onto the bottom sill of the wood frame. These screen bottom latches are used by many window manufacturers. Can use 1 latch and screw per screen frame.