Ko tenei riipene hiri miro PTFE, e whakaatu ana i te riipene kowhai kanapa me te keehi maramara, ka whakakotahi i te tirohanga me te mauroa. He 19mm te whanui me te 0.1mm te matotoru, he pai te hiri mo nga momo punaha paipa. Ko te tae kowhai hihiko me te keehi maramara e taea te whakarite kia whai kiko me te whakatairanga, he huarahi pai ki te whakanui i to waitohu.