A bone folder, bonefolder, or folding bone is a dull-edged hand tool used to fold and crease material in crafts such as bookbinding, card making, origami, and other paper crafts that require a sharp crease or fold.  Approx. 1” x 6”  slightly tapered smooth edged so it won't damage the paper you are working with.  This is a very durable and comfortable tool with slight variations in color and shape.  This can also be sharpened and or reshaped into a letter opener, if sanded and polished it will scrimshaw nicely.