106mm long, 18mm wide. Spring loaded lever that bolt flicks up and down, easy to operate and suitable for the edges and rear side of the door. Made of stainless steel, wear-resisting and durable to use. Comes with screws and surface strikes for installation, 0.2" (5mm) mounting hole diameter. High polished surface, smooth and no burrs. Secure the opening for composite door, French, patio, wood, double or other doors. This flush bolt is typically installed on the top and bottom leading edge of the slave door. Slide bolt latch installed at the edge of the door and completely hidden. Available for home, room, patio, primary-secondary doors, double-open, wood door, sliding door, etc. No mechanical parts are seen when the door is in the closed position.