THE WIN-PIN prevents potential thieves from forcing open aluminium window handles by forcing a screwdriver or blade into the gap between the window and the frame thereby pushing the handle up and forcing the window open. THE WIN-PIN is a strong security pin which is fitted through a hole in the window handle and into the frame, securing the handle in the locked position. It is attached to the handle via a lanyard so that the security pin hangs off the window handle when the pin is removed when the window is open, so it is easy to re-insert when the window is closed.