Killzone Practice Broadhead, 100-Grain 100 grain, 1 per pack 2 inch cutting diameter Practice head Spring Clip design - no 0-rings or rubber bands The massive 2" cutting diameter creates devastating entry and exit wounds for quicker recoveries NAP's spring-clip design holds your blades closed in your quiver and in flight, every time The Killzone is available with a cut-on-contact razor tip for extreme cutting and penetration