Reliable Security Door LockDoors and windows can be closed with special sliding door screws, providing reliable intruder protection and providing enough strength and stability for each door/window, the knob labor-saving, can be moved up and down, and can be easily opened, creating a safe living environment for you. High-quality stainless steel screwsIncludes 2 solid bolts in High quality 304 stainless steel with a brushed finish for a metallic look and feel. It is not easy to oxidize, has strong corrosion resistance, and can be used for a long time. Hidden designThe huge latch is 15cm long and can be installed in the doorway. No mechanical parts are visible. The mechanical parts are completely hidden when the door is closed. This concealed style is easy to use and complements your modern decor. Easy to InstallEach screw set comes with 4 rustproof screws and 1 fixing washer. The screws are made of stainless steel and are available in two sizes. The long screw is 3cm to fix the screw and the short screw is 2cm to fix the connector. Screws provide extra strength and can be locked and locked to hold them in place. Suitable for all door typesIt is often used for one of two wooden doors, the another is used for ordinary passageways, ordinary household security doors, and can also be used for interior doors. It is an ideal choice for all kinds of wooden doors. It can also be used in many different installation environments. Product Description Concealed Latch ---The concealed door security bolts made of high quality 304 stainless steel provide enough home security. [Polished Chrome Plated Flat Head Bolts] The sliding door lock is made of high quality 304 stainless steel, and the surface is chrome plated and polished, which is smoother, not easy to oxidize, has strong corrosion resistance, and can be used for a long time. [Hidden door security bolt] These flat head bolts can be installed at the door, so that the mechanical parts are completely hidden when the door is closed. This hidden style is easy to use and suits your modern decor. [Door Security Lock] The door latch is made of a strong, flat steel rod which runs in a long continuous rail connected by a backplate, providing reliable protection against intrusion and providing sufficient strength and stability for any door. [Fully Featured] Each bolt lock is equipped with 4 anti-rust screws and 1 fixing gasket. The screws are made of stainless steel and are available in two sizes. The long screw measures 3 cm and the short screw 2 cm, they are used to connect the washers. Specifications Materials: stainless steel Dimension: 15 *2*1.6cm Weight:210g Packing Includes: 4*screws 1*gasket 2*hidden door latch