Patented deep lobes in cutting tip create an air foil that drafts wind over the blades and disallows windplaning. Once in the animal, the lobes create a hydrofoil forcing body mass outward and thus removing friction down the arrow shaft; this results in the deepest penetration on the market. Offset and Stealth blade design. The blades are .032″ thick for strength and have no blade windows. The replacement blades are sharpened front and rear to create a backcut if the head does not pass through the animal. It will cut its way back out! One piece stainless steel body construction.