David Curtiss Knives are hand built, hand finished pieces of top quality steel. He recommends hard use in lieu of a lifetime in a box and each comes with a lifetime warranty to give you the peace of mind about using and abusing it. His designs are meant to be carried each and every day and they feature his patented S.P.O.T. pivot system. It's a non-adjustable, strong mechanism that's smooth and built to last. You'll definitely be proud to own a Curtiss knife.