Broadhead features .035 stainless steel blades, stainless steel instant cut tip, HexFlat design for stable flight and are machined from aircraft quality aluminum. Includes free practice head and has a 1.5" cutting diameter. Replacement blade pack includes 3 replacement tip blades and 6 replacement main blades. This head is designed for archers with short draws and or light weight bows with less than 40 lbs. of kinetic energy.