Trusted by generations of bow hunters, the thunderhead stands as the gold standard in fixed blade broadheads. With razor-sharp blades and unmatched build quality, it has harvested more game over the years than any other broadhead on the market. Cutting diameter - 1-3/16" with a 3-blades configuration Blades are secured without the use of lock rings or O-rings Engineered for high-speed bows Set of 5 units