MasterLock's new Letter Lock™ is easy to dial and easy to remember! Using 3-letter combinations, every indicator is clearly labeled with bold letters. Each lock comes with a fun, easy to remember phrase that makes using it as easy as A-B-C. Has option for control key for supervisory access (specify existing key number to match an existing system). Just like our 1525L (key control) & 1502L (no key control) series of locks, except with letters instead of numbers. Choose from 8 dial colors.