Rage Trypan shock collars help prevent the blades on your Rage Trypan broadhead from prematurely deploying if you accidentally bump your broadhead while on stand or stalking. Shock Collars fit the 100 grain Rage Trypan Broadhead. Shock collars break on impact, so they will need to be replaced after every shot. Inspect the shock collar prior to use to ensure proper function. 20 per container.