Spitfire is undoubtedly the most trusted name in mechanical broadheads. Spitfires fly straight with pinpoint accuracy and perform better than any other mechanical broadhead. Thanks to the sharpest Diamize blades they stand up to the toughest conditions and leave the most devastating wounds. The NAP Spitfire features the patented slimline ferrule, a design exclusive to NAP. NAP's snap-lock blade system holds the blades closed during flight, even out of today's fastest bows without rubber bands or O-Rings. Practice blades are available for the Spitfire to ensure your sharp blades are ready for the field when the time comes. The 85 grain Spitfire features a 1 1/4" Cutting diameter, the 100 and 125 grain Spitfires feature a 1 1/2" cutting diameter.