Isici esikhulu kunazo zonke salesi simpompi siwumklamo we-knurled, ongagcini nje ukwandisa amandla okuphikisana futhi udlala umphumela ongasheleli lapho uhlanza, kodwa futhi wengeza isitayela esiyingqayizivele endlini yokugezela.Yenziwe ngethusi engu-59, ehlala isikhathi eside futhi ngesikhathi esifanayo umphumela wokuvala inzalo nokubulala amagciwane.I-ceramic valve core eye yahlolelwa ukushintshwa kwe-500,000 isetshenziswa, ukuze ukwazi ukukhathazeka mayelana nokuthengisa emva kokuthengisa.