Lock, security, surface mount, model crr06, made of steel with a gray finish, 105 b/50 mm, with 3 master keys, 105 mm plate and 50 mm round cylinder, to reinforce security by installing on any type of door. being reversible, it is not handed, allowing internal operation via a button, while external operation is done with a key through the cylinder, using identical master keys with a serrated type a. screws are included.