Sheffield Quick Change Lock Back® Utility Knife - GNK12119 The Sheffield Utility Series 12119 Quick Change Lock Back® Utility Knife features a one-hand opening operation for ease of use allowing you to cut through all obstacles such as paper, cardboard and more! This Sheffield Utility Knife also boasts a quick-change mechanism for a quick and easy blade replacement procedure; using standard utility knife blades, 5 of which are stored ready in the handle (and a bonus 6th blade in the blade holder) . For even more attributes, this Sheffield Lock Back® Knife is constructed of a lightweight ABS handle for maximum grip and comfort and includes a belt clip for your convenience! So go ahead cut through twine, boxes and more with ease. As always, Sheffield's industry-leading Lifetime Warranty has your back. Patented Quick Change Blade Mechanism Lock Back® Release Lightweight ABS Handle with 5 blade storage compartment 5 Ounces, 6 Inches Overall 4 Inches Folded Features Pocket Clip Thumb Rest Accepts All Standard Utility Blades 6 Blades Included Lifetime Warranty