2 Blade Broadhead - Hypodermic Tip - Titanium Streamlined Ferrule - .039 Blade Thickness - 2 Cutting Diameter - No Collar Blade Lock - Super Swept Back Blade Design - With a 2-inch cutting diameter the Hypodermic Trypan NC Crossbow 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 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. With a narrow profile 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. Rage broadheads have become famous for their reliability and ability to put game down fast; the new Hypodermic Trypan NC Crossbow delivers on all accounts and will continue to convince even the staunchest of critics they should trust their hunt to Rage.