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.