Plantex Heavy Duty Swing Bar Lock/Door Safety Guard with High Security Auxiliary Lock for Home/Office/Hotel – (SH-42, Silver, Chrome Finish) 𝐃𝐮𝐫𝐚𝐛𝐥𝐞 𝐂𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭𝐢𝐨𝐧 – This swing bar lock is made of zinc material with chrome finish. It’s scratch-proof, rust-proof & corrosion-free which makes lock strong and durable 𝐇𝐨𝐦𝐞 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐓𝐨𝐝𝐝𝐥𝐞𝐫 𝐏𝐫𝐨𝐨𝐟: Swing bar door locks are security locking devices for swing-in doors, allow people inside the room to open the door few inches for identification or ventilation while providing privacy and security for guests and residents. 𝐂𝐡𝐢𝐥𝐝-𝐬𝐚𝐟𝐞 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐃𝐞𝐯𝐢𝐜𝐞 – This swing bar lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security. 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐂𝐫𝐚𝐟𝐭 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐬: Home security door latch lock features steel ball positioning which is a unique locking design that holds locking arm in place so they will not swing around for extra security. The countersunk hole design makes the security guard lock noble and elegant. A must-have door stoppers security bar for every home 𝐒𝐢𝐳𝐞: The size of swing bar lock is 10.5(L) X 2.5 (w) 6 (H) CM. You can start using it by installing right after you receive it