The DK4 represents the next level in broadhead development. This hybrid-mechanical broadhead features a pivoting main blade and two mechanical bleeder blades design for maximum penetration potential. The main blade hit hard and deflects around very thick bone sections to maintain momentum and deliver true pass-through power. Spitfire spring clip technology holds the main blade in during launch and the bleed blades are guaranteed to open on impact no matter what your target. 1 3/4″ cutting diameter.