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Continue to ChatJOUCOMATIC 44956C020020 - 20mm Bore, 20mm Stroke, PEC20NAT0020LDM, Series 449 Compact Cylinders With Anti-Rotation (Type PEC) https://www.valves-direct.com/product/joucomatic-44956c020020-20mm-bore-20mm-stroke-pec20nat0020ldm-series-449-compact-cylinders-with-anti-rotation-type-pec/