Protech Large Don Maple Burl 1906, automatic knife, 10.375 inches overall open length with a 4 1/2 inch black blade. This 3d machined Italian inspired auto Masterpiece it is itegrated with guards in the blade that give the DON series a more old school look. The large version of the knife is really something to behold. This large scale has te famous Pro-Tech SNAP that is executed beautifully every time you push the button! It is available in a wide variety of inlays, custom options, etc. Made in the USA.