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Return springs for AO Smith Hydra-Buff E-12 end-of-car cushion draft gear. Early version as applied to some WAB 60’ GSC flats, RI 50′ PS-1 boxcars, and more. Package contents: (4) 3D-printed resin spring units Special thanks to TLE&W Railroad Museum for assistance with this project.
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🇺🇸 Ship from USA · On Agora since 2026
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