The Stanley Tools FatMax® Retractable Twin Blade Knife combines a hooked and utility 1992 blade into one knife. For added safety, only one blade can be extended at any one time. The interlock patented blade locking system provides greater safety during cutting. It has an instant blade change button for quicker blade changes. The handle has an ergonomic grip for added comfort and features internal blade storage for up to 5 blades. A thumb Pad provides additional grip.