Sprocket Presto aluminum 50 teeth 4 hole for KTM 505, Garelli Cross 40, Hercules Prima 1-6, MP 2, 4, MF 3, M 6, HR Hobby Rider, P 1, MX SX, 5, Optima Pronto, Presto, Zündapp A 25 Automatic Type 460-01, 460-02