Rage Legacy SHOCK COLLARS help prevent the blades on your Rage broadhead from prematurely deploying if you accidentally bump your broadhead while on stand or stalking. Legacy SHOCK COLLARS fit any 100 grain Rage Broadhead and are designed to be used in conjunction with the O-ring for optimal blade retention. Legacy SHOCK COLLARS are designed to break upon impact and will need to be replaced after each shot. Blades should rest on the solid portion of the SHOCK COLLAR, not in the cuts. Inspect the SHOCK COLLAR for any damage prior to use to ensure proper function. Approximate quantity is 15-20 per container.