The Hypodermic Trypan NC Crossbow delivers on all accounts. With a 2-inch cutting diameter, the Trypan NC Crossbow cuts huge entry holes upon impact from the.039-inch-thick razor-sharp machine-stamped blades. The heads Slip Cam design allows the stainless-steel blades to effortlessly slide into an optimized position with perfect attitude for cutting diameter and penetration. With a needle-like titanium ferrule and Ferrule Alignment Technology achievement of field point-like accuracy in flight is second nature, while still offering devastating results upon impact. The NC (No Collar) technology integrated blade containment system utilizes cutting-edge finger-like tabs on the blades pivot point to anchor the blades in place while in the closed position. This technology eliminates the need for a Shock Collar, dental band, or O-ring, while still providing a 100% reliable blade retention system.