The Sheffield Utility Series 12125 Mini Quick Change Lock Back Utility Knife features a one-hand opening operation for ease of use as you cut through obstacles such as paper, cardboard and more. It boasts a quick-change mechanism for quick and easy blade replacement. This tool features 6 mini utility knife blades (5 are stored in the handle and a bonus 6th one is in the blade holder). This knife has a lightweight ABS handle for maximum grip and comfort, and includes a key chain for your convenience. You can cut through twine, boxes and more with ease. As always, Sheffield's industry-leading Lifetime Warranty has your back