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Continue to ChatJOUCOMATIC 4485002250 - 40mm Bore, 50mm Stroke, STB40A0AB50DM, Series 448 Rodless Band Cylinders With Active Brake https://www.valves-direct.com/product/joucomatic-4485002250-40mm-bore-50mm-stroke-stb40a0ab50dm-series-448-rodless-band-cylinders-with-active-brake/