Plantex Heavy Duty Door Lock - Main Door Lock Set with 3 Keys/Mortise Door Lock for Home/Office/Hotel (7091-PVD-Choco & Satin Black Matt) Technical specifications: bolt cylinder - 70 MM & pin to lock body - 45x85 MM, for any door of thickness ranging from 28 MM to 55 MM Assured help of 36 months for handles & 18 months for cylinders as a warranty against manufacturing defects. Having a virgin zinc alloy build, it has brass reversible latch with solid brass dead bolt on one side and key operation from the other side. This 7091 door lock with handle is fully reversible to be installed in front as well as in the back of your door. Serves all the domestic & professional uses. The door locksets by Plantex are an excellent replacement or upgrading option with an auto-retraction mechanism & reduced noise in its handles.