Far more than a simple helmet, a single blast from this head gear will stop your opponent in their tracks! Limited Use. You can only have one freeze item equipped to a pet! The H4K, or the H400 Helmet, is a freezer. It used to be very cheap, and when I say very cheap just a few thousand neopoints and buyable. Now the price has soared to 7,000,000! A great investment for those who decided to buy tons back in the days.