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Return springs for AO Smith Hydra-Buff E-12 end-of-car cushion draft gear. Late version as applied to TTX 60’ flats. Hydra-Buff units eventually deemed unsatisfactory by TTX and replaced with other draft gear. HO scale. Package contents: (4) 3D-printed resin spring units
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🇺🇸 Ship from USA · On Agora since 2026
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