The Master Lock No. 1652 features the new button-less combination change process technology, along with a new, stylish octagonal dial. With the new technology, the combination is changed with just your control key, from the outside of the locker. These locks boast the longest fully retractable bolt and a springbolt action for convenient, automatic locking. Standard key control used for combination changes and allows quick supervisory access. Customization options are available along with ADA compliant models.