Master Lock 1590D set your own combination lock. The patented 1590D Set Your Own Combination Lock is designed for the traditional, nostalgic user who is more comfortable with using a rotary dial. For the first time, Master Lock is now able to offer those users the dial combination locks that they fell in love with in high school with a resettable feature. Users can choose their own combination using three letters or numbers and operate the lock with the standard right-left-right combination lock movement most consumers are familiar with. An enclosed reset tool ensures that users will never forget their combination again. 1590D Set Your Own Combination Lock is available in a matte black, blue or green finish. Colors are randomly selected for each order at the time of shipment. 1-15/16" (49mm) wide body.