SILVER HARPOON by Archers Ammo An expandable broadhead by Archers Ammo with a new CONVERT-A-POINT WEIGHT SYSTEM that instantly changes weight from 85 to 100 grains by the addition of a grass weight ring. Has a steel chisel point with 3 open-on-impact .030 stainless steel blades and 1 3/8” cut #890.......................................$24.99/3pk #891....Extra blades...............$9.99/9pk