It's the first time we have been asked for the hands free clip. It's relatively easy for us to manufacture this but I am not sure if it's really that necessary. As long as the beer is cold enough then not much counter pressure is required. If not much counter pressure is required then the bung holds itself into the neck of the bottle fine as it is. So I really do not see the necessity for the clip unless your beverage is too high temperature and therefore needs higher counter pressure.
I should also say that even if your beverage is too high pressure the clip would only solve the issue of filling. As soon as you remove the clip and head from the bottle if the temperature is too high you will probably have gushing out of the top of the bottle too so really the answer is make sure the beverage is close to 0C before you start using this device in the first place.
I should also say that even if your beverage is too high pressure the clip would only solve the issue of filling. As soon as you remove the clip and head from the bottle if the temperature is too high you will probably have gushing out of the top of the bottle too so really the answer is make sure the beverage is close to 0C before you start using this device in the first place.