The deluxe SK-358 Snap-Off Blade Knife features an auto-loading design that loads six blades at once giving the user a total of 48 blade segments and an unrivaled ability to work continuously. It also has a steel track and a ratchet lock mechanism that provides unprecedented cutting stability. The ratchet locks the blade into place with unlimited blade depth positions for the highly detailed jobs. The SK-358 also features a contoured ergonomic handle and back end attachment that can be used for safely snapping off used blades. For better retention purchase with the UKH-324 or UKH-325 Nylon Holsters.