Wheel axis, REAR (MZA) - Simson Dimensions: Total length: 165 mm (150 mm + 15 mm) Axle diameter: 12 mm Thread: M12x1,5 Can be used for: Simson S50, S51, S53, S70, S83, SR4-1, SR4-2, SR4-3, SR4-4, SR50, SR80, DUO, KR51/1, KR51/2 The product of the MZA, which is the exclusive holder of the SIMSON brand. GPSR Contact: MZA Meyer–Zweiradtechnik GmbH, Baunsbergstr. 60-62, 34131, Kassel, Germany,