Flush bolt dimension - 16cm (length) x 2cm (width) x 1.6cm (thickness), required throat depth is 1.6cm, protrusion bolt 1.5cm often used on one pair of wooden doors, leaving the other door for normal traffic, also suitable for internal doors manufactured by 304 stainless steel and brushed finish, anti-rust and long durability, give a touch of elegance and quality to the doors Spring loaded lever that the bolt roughs up and down, easy to use and suitable for edges and back side of the door Package Contents - 2x Door Safety Bolt, 2x Attack Plate, 8x Installation Screws; No instruction included, carpenter installation will be best Quantity: 2 pieces Note: It does not include other things, the color is based on the first picture, and the other pictures only show the effect due to the differences between different monitors, the picture may not reflect the actual color of the item. . due to manual measurement. Please allow deviation. THANKS!