Most homes will have 1 of 2 keyways on it. The keyway is the shape of the lock cylinder where you insert the key. This tool will only work for SC1 locks which are commonly known as Schlage, Dexter, etc. Check your door to see what kind of lock yours has.
This lock picking tool is a combination picking, tensioning, and decoding tool all in one. The graduated lines on the side of the tool make pick tip placement as easy as it gets. Once a lock is opened, the pick tool can be used to quickly decode the bitting values of the key that would open the lock. Product comes with the tool, a hex key for tightening the collar, and a case.