The Fury 32219 Shiver Double Folding Knife from Joy Enterprises was originally designed during World War II for use by German Military paratroopers. A completely unique fold over concealed blade handle is a great piece of engineering. When in the closed position, press on the shorter interior handle, one complete rotation and the blade is exposed. Ultimate safety when closed and great strength when opened. All topped off with a tactical crown, use as a window punch or to make a statement. A must for every knife collection!