8.5" Skull Spring Assist Folding Pocket Knife Skeleton Claw Karambit Blade - Tophatter's Inc. Weapons Store OnlineEyes will be drawn to this dramatic spring assisted blade, when you pull it out for whatever task you are about to take care of. The skull on the top of the handle is only part of this amazing knife. The path of bones running down from the tip of the blade all the way to the bottom of the handle is not for the faint of heart. The entire knife is made from stonewashed stainless steel and includes a pocket clip. Specifications: Spring assisted open 3.