NAP Ignite 4 Broadheads 100 gr. 3 pk.NAP Ignite 4 Broadheads 100 gr. 3 pk. X lock blade system ensures blade retention on impact;. 031 thick ultra sharp replaceable razor sharp stainless steel blades; Individually spin tested for optimal down range flight performance; Practice blades included ultra sharp replacement blades included: one set; 1 3 16"" cutting diameter 100 grains Item Category Code: 1300 Product Group Code: 1300A Inactive: Yes