This latch shield is constructed of durable steel and comes in a beautiful finish. Features an interlocking design to prevent access by forced entry on swing-in doors. Designed for use with in-swinging doors and it can be used on residential, commercial and industrial applications. Installation of this latch shield requires no mortising, and it can be mounted on wood and metal door systems. Complete with one-way, tamper-proof screws for use on jamb-mounted bracket. Installation is easy. Note: A one-way driver bit may be necessary to drive in one-way screws in lieu of a regular flat head screw driver.