Ko ta maatau riipene hiri miro PTFE, i hangaia me te wira puru me te keehi ma, e whakaatu ana i te ahua o naianei me te mahi hiri whai hua. Ko te 25mm te whanui me te 0.1mm te matotoru ka whakarite he hiri pono mo nga paipa nui-diameter. Ko tenei rīpene ehara i te mea ka whakarei ake i te mahi engari ka taea hoki te ta moko ritenga ki runga i te kee ma, he mea tino pai mo te whakaatu i to waitohu.