Bohning Griffin Vane 40 Pk Silver. The twisted ribbon design aids in immediate arrow rotation and the minimal surface area resulting from the cut-out profile provides a stable & accurate flight in variable constant and zero wind shooting scenarios. Weighing 1.2 grains the Griffin can be fletched with a standard Pro Class Style Jig using glue or tape. Features of Bohning Griffin Vane: Designed for olympic recurve archers Weighs 1.2 grains Clamp adapter included 40 pk Package Contents: Bohning Griffin Vane Bohning 101055SL1: Griffin Vane 40 Pk Silver