Altra 204 Glue In Point 350-400 80 gr. Made from hardened 416 stainless steel;Fits Altra 204 Arrow Shafts;Ideal for Target & 3-D shooting;Comes in 12 pk QTY;Available in two sizes for optimal fitment: 250-300 spine or 350-400 spine;Weight options: 80, 100, & 120 grains;Accepts micro FMS insert weights;Designed for unmatched precision and performance