Wasp Archery Products The Dueler (Dual-Purpose) This is the FIRST dual-purpose (can be shot with a crossbow or vertical bow), dual cutting diameter 2-blade mechanical broadhead. Simply use two O-rings for a crossbow and a single O-ring for your vertical bow and you have one of the most versatile broadheads on the market The Dueler allows for more cutting surface, which equals more damage; with our all-American stainless steel blades that hold tough during penetration, you can be sure you are making the most of big-cutting broad heads Our O-ring System requires the least energy for deployment while offering the most reliability; once the O-ring deploys, the blades are allowed to release simultaneously 100% MADE IN USA