The Rattl’r is a knife with a single combo blade that has both strait and serrated edges. It is a one handed opener and uses a liner lock mechanism. The single blade is made of 440C steel that has a bead blast finish. G10 scales provide a nearly indestructible handle. This knife has a 3.4 inch blade, is 4.9 inches closed, and is 8.3 inches overall when open.