Utility Knife, Self-Retracting, Tool FreeMfr #: 10490 Finger friendly blade is the only safety blade on the market Durable and ergonomic metal handle designed for longevity and comfort An easy grip slider allows you to manually retract the blade when not in use Convenient in built blade storage compartment Suitable for left and right handed uses Slice blades last 11. 2x longer than traditional blades