Tank cap polished aluminum 40mm lockable for Zündapp Combinette KS, GTS, C Type 517, Kreidler Florett, Puch Monza Cobra, Hercules mopeds, S50, S51, S70, S53, SR50, SR80, KR51/1, KR51/2, SR4-2, SR4-3, SR4-4, SR1, SR2, SR2E