PRODUCT DESCRIPTION This is a bronze finish flush extension bolt usually used on commercial aluminum or steel doors. The unit fits into the door at the bottom or the top with a flush lever that operates the extension bolt up or down. The extension bolt rod is adjustable from 8 inch to 10 inch and has a nylon tip treaded onto it. Fasteners and the flush bolt guide are included. FROM THE MANUFACTURER This extension bolt is constructed from die cast. It features a flush mount design and an adjustable bolt rod for locking aluminum and steel doors. It can be mounted to latch at the top or bottom of your door. See model number J 4565 for replacement tips.