HH10CV Repair Kit Hyperhat trigger box & foam replacement Kit HH10CV replacement trigger box & foam with required securing hardware. Instructions for repair do come with the kit and it is quite simple. The trigger in the Hyperhat is one of the most protected from shock and tend to last quite a long time. However, everything fails eventually that is simply a rule of the universe that mankind may never conquer, so we provide our drummers with a solution to that eventuality. Always check the condition of your foam first as it is more likely that it is what needs to be replaced.