This Folding Lock Back® Utility Knife Set features the Sheffield 12113 Folding Lock Back® Utility Knife and the Sheffield 12125 Mini Folding Lock Back® Utility Knife to cover your box cutting, twine cutting and a variety of other cutting needs. A one-hand opening operation for ease of use allows you to cut through all obstacles such as paper, cardboard and more. This set also boasts a quick-change mechanism on both knives for a quick and easy blade replacement procedure, using standard utility knife blades. Constructed of a lightweight ABS handle and includes a belt clip or key chain for your convenience.