Heavy duty security lock: Our concealed door opener bolts are made of 304 stainless steel, which is strong and reliable enough for wooden doors. Easy Installation: With stainless steel screws, stronger screws provide extra strength, can be firmly clicked and locked so as not to move. Stable locking lever: The door bolt lock lever is also made of stainless steel, it is dustproof and corrosion proof and does not rust, which can provide security for a long time. Concealed anti-theft: anti-theft made of thick aluminum High quality. Specially designed latches are often used in one of the double opening wooden doors, and they are also applicable to other wooden doors. Concealed door lock: no mechanical parts are visible in the door and it is completely hidden when the door is closed. This understated style is easy to use and matches your modern decor. Quantity delivered: 2 pieces