Hikelok o loʻo i ai le tele o ituaiga o oloa, e aofia ai valve meafaigaluega ma mea faʻapipiʻi, oloa maualuga maualuga, oloa mama maualuga, vaʻavaʻa faʻagasologa, masini masini, faiga faʻataʻitaʻiga, faiga faʻapipiʻi muamua, masini faʻapipiʻi ma mea faigaluega meafaigaluega.
Hikelok meafaifaʻaili umi lima faʻapipiʻi faʻapipiʻi faʻasologa e ufiufi URWU, UWE, UWT, URWT, UWC, UWR. Ole tele ole lapo'a e mai le 1/4 ile 1 inisi ma le 6 ile 18mm.
