SAFEGUARD Brass Double Cylinder Deadbolt Lock: LOCK-07352 Made of brass plated stainless steel with solid brass pins inside to prevent rust Fits 1-3/8-inch to 2-inch thick doors - great for all types of door locations - instructions prov Comes with 2 keys for your convenience - both sides have key holes - all hardware included Double cylinder for added security - great for doors located close to windows Double cylinder deadbolt locks may help reduce theft by almost 50% compared to single cylinder