Quikfletch W/Y/Y Quikspin Fletch for Crossbow (3-Pack) QuikFletch QuikSpin ST features NAP's patented kicker and micro-grooved combination on the 2" vanes The QuikFletch QuikSpin shrinks to fit any size carbon or aluminum arrow shaft Result - increased accuracy, tighter groups and extended effective kill range; Award winning performance for hunting, 3D, or competition shooting Weight: 36 grains; Vane Height: 15/32" (0.47")