The Sheffield Utility Series 12116 mini ultimate Lock Back utility knife is proof that great things, especially great sharp things, comes in small packages Featuring a onehand 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 quickchange mechanism for a quick and easy blade replacement procedure For even more attributes, this Sheffield Lock Back Knife is constructed of a lightweight aluminum handle and includes a keychain for your convenience So go ahead cut through twine, boxes and more with ultimate ease As always, Sheffield’s industry leading lifetime warranty has your back