A 3Rivers Archery exclusive! These amazing Steel Force 4-Blade Screw-In Broadheads feature Steel Force quality at a low 3Rivers price! The 130 grain model features an aluminum ferrule. The 200 grain model features a steel ferrule. Both are designed to fit all carbon and aluminum arrows as they have an industry standard 8-32 thread. This is the same thread used by all arrow inserts (except Easton Deep Six). Like most Steel Force broadheads, these 4-blade broadheads are razor sharp and made from the finest knife grade steel. The straight edge offers slightly better penetration than convex blade broadheads. Features a 11/32" ferrule. Measures 2½" long x 1-1/8" cutting width with 1" bleeder blades. Sold by the 3-pack. Available in 130 grains (aluminum ferrule) and 200 grains (steel ferrule.) Please specify. Does not include lifetime warranty.