The Prime-Line Cam Action Window Lock replaces or upgrades the sash lock on single and double hung vinyl windows. This small window latch is constructed from diecast and comes in a beautiful finish. Mounting hardware included. A Phillips head screwdriver is required for installation. The window latch replacement features a cam action hook which draws the brass sash lock keeper tight when locked. The body of the prime-line window latch has anti-jimmy studs which engage the keeper of the window lock replacement. For further dimensional information, please see the line drawing.