6 Pcs White Vinyl Plastic Window Tilt Latch Pairs for Sliding Windows

EASY TO INSTALL: Remove the old latch and slide the new latch into the slot; If the latch is too long and extends beyond the edge of the window, most windows have a square or circular end on the inside of the cut; You can use pliers or small wire cutters to cut it, which can make the latch easy to slide and level with the edge of the window.

eBay