The combination lock that I used in this video was from Master Lock but there are other companies to make them too. Parts of a Combination Lock include: Case, Shackle, Shackle Collar, Lever, Latch ...

Turn the dials to the original combination, 0-0-0. A latch lock may have a reset button, no reset button or a slide selector. If it has a reset button, use a pointed object such as a ballpoint pen ...