The Slice Super-Safe Carton Opener is a unique knife with a design that's ideal for those with dexterity issues or anyone wearing work gloves. Its large, circular handle fits comfortably in the palm for straight, flush cuts. Press the orange button with an index finger to unlock the blade guard. Then, press the tool down, flush, onto the cutting surface and pull to make the cut. Once the 10477 is no longer held against the cutting surface, its blade guard redeploys, keeping the user safe in the event of a slip. As with all Slice tools, the Super-Safe Carton Opener features a finger-friendly blade that's safe to the touch, cuts effectively, and lasts up to 11 times longer than comparable steel blades. The installed rounded-tip blade (10526) can also be replaced with an optional pointed-tip blade (10528) for materials that require puncturing to initiate the cut