The Benchmade 3551BK Stimulus is an Automatic Knife that was designed by Pardue. The Stimulus features a 154CM stainless steel blade and a black aluminum handle. The spear point blade on the knife measures 2.99 in. and has a black finish and a plain cutting edge. The black aluminum handle is sturdy and measures 4.10 in. Overall the length of the knife, when open, is 7.10 in. and it weighs approximately 2.71 oz. Made in the USA.