SO11-Hidden-Edge-Safety-Knife-Starrett-DA63545-p-The-Starrett-SO11-Hidden-Edge-reg-Safety-Knife-keeps-the-blade-safely-tucked-away-when-not-in-use-yet-is-instantly-available-by-simply-releasing-the-safety-lock-and-squeezing-the-lever-to-the-knife-body-The-cutting-depth-is-easily-and-accurately-adjusted-with-a-thumbwheel-p-p-With-quick-release-blade-change-and-storage-space-for-blades-in-the-lever-making-blade-changes-fast-and-tool-free-no-need-to-take-the-knife-apart-to-change-the