Flush bolt is great especially to jamb on French, patio, wood, double or other composite doors, offers concealed locking for dummy doors and inactive doors. Constructed from solid material, it's sturdy and reliable enough for residential daily using. This mechanism comes with reasonable interior design, do not worry about felling apart suddenly when using. With comfortable touching and concealed style, it will surely offer you enjoyable usage and perfectly finished to complement your decor. Recommend to purchase two for top and bottom of the door. Specification: Material: Stainless Steel Color: Silver Size: Length=6"(15cm), Width=0.79"(2cm), Depth = 0.67"(1.7cm) Available for: Composite ,French, Dummy Doors Package Included: 2 x 6 Inch Door Flush Bolts 8 x Screws 2 x Strikes Installation Instruction: 1. Figure out where to install the flush bolt(usually on inactive leaf of double door opening) and drill grooves. 2. Install the flush bolt on the door leaf and tighten each screw. 3. Line up strikes on the door frame or on the floor and drill holes, then tighten each screw. 4. Close the door, put the pin into the hole, done.