Altra 246 Heavy Insert - 52 Grains - 12 PackAltra 246 Heavy Insert 52 grains Enhance your archery experience with the Altra 246 Heavy Insert, designed for precision and performance. Each insert weighs 52 grains, making it the ideal choice for those seeking a robust and stable flight path. This product comes in a convenient 12 pack, ensuring that you have enough inserts for multiple uses, whether for practice or competition. The Altra 246 is specifically engineered to accept non micro FMS insert