Customize Your Master Lock M1KASTS Series Padlock!
- Select Keying Option: Keyed Alike (M1KASTS, M1KALFSTS, M1KALJSTS) Only.
- Select Shackle Option: Standard M1KASTS (1" Shackle), M1KALFSTS (1-1/2" Shackle), or M1KALJSTS (2-1/2" Shackle).
- Special Ordering: All Master Lock Special Orders ("Match to Existing Key Number") require a 3-4 week factory lead time. Please enter your existing key number in the "Keying Instructions" Box below. All special-order padlocks are custom-made and cannot be returned.