Great Neck® Sheffield Folding Lockback Knife, 1 Utility Blade, 2" Blade, 3.5" Aluminum Handle, Blue (GNS12113) EachGreat Neck Sheffield Folding Lockback Knife One hand opening lockback utility knife in blue. This innovative and useful tool combines the best features of a lockback knife with a utility knife. The blade is changed easily using patented snap lock and sliding mechanism. Global Product Type: Folding Utility Box Cutters Knife Type: Utility Blade Type: Folding; Replaceable Blade Material: Cutlery Steel Number of Blades: 1 Applicable Material: Cardboard;