How does your Hitachi look? Is the head cracking? You don't have to retire your favorite bedside friend yet. You can pop the head off and say "Off with your head!!" Replace that piece of discolored plastic with a fresh new silicone cap. This head has 3 vertical ridges for vulva stimulation on one side and a raised ridge for clitoral stimulation on the other side. Made of platinum silicone that warms to body temperature. The cap is not a stand-alone and is meant for external use only.