This ball bullet catch and strike is constructed of steel and come in a brass-plated finish. This item features a fully adjustable barrel, and it can be installed on the top edge of hinged-swinging doors, or on the vertical edges. This ball catch helps keep doors in closed position without the use of a standard turn knob or lever, allowing the door to merely be pulled open without having to twist the wrist. These ball catches are for use with hinged-swinging doors, commonly used on closet doors, pantry doors, kid's room, etc. This ball catch is easy to install and it is used by many.