The Maniac features the Hyperloc system that brings cut-on-contact reliability to new levels. Strong, thick .040 hardened stainless steel Hyperloc blade unit is a one-piece unit from the cut-on-contact tip all the way back to the main blades and into the arrow insert. Fully machined solid build 7075-T6 ferrule, no screws, washers or rings. Can be shot 2 or 4 bladed. Available in 100 grain, 1 1/8" cutting diameter.