Snap Together Screw Covers are used to neatly hide exposed screw heads. These screw covers are compatible with most types of screw heads — including countersunk, flat head, machine, self-tapping and wood — in sizes #4 to #6. Simply thread the screw body through the base component and install. Once installed, the attached cap snaps onto the base for a tight seal. The screw head is now hidden from view.