RAGE HYPODERMIC TRYPAN NC BROADHEADS 100 GR. 2 PK. With a 2-inch cutting diameter, the Trypan NC cuts huge entry holes upon impact from the .039-inch-thick razor-sharp machine-stamped blades. Once deployed, the head’s Slip Cam™ design allows the stainless-steel blades to effortlessly slide into an optimized position with perfect attitude for for cutting diameter and penetration. The newly incorporated 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 completely eliminates the need for a Shock Collar, dental band or O-ring, while still providing a 100% reliable blade retention system.