Yale has been building the world's favorite lock since 1844. All Yale padlocks contain the precision locking mechanism that helped make Yale the world's favorite lock. The latest insights apply key features exactly where they are needed for the most effective user application. The original solid brass bodied locks, for indoor and general outdoor applications, with features such as double locking mechanisms or on some models, adjustable or shrouded shackles. Re-settable combination locks allow the lock to remain a household favorite no matter whom it is passed on to.