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Continue to ChatJOUCOMATIC 44956C050040 - 50mm Bore, 40mm Stroke, PEC50NAT0040LDM, Series 449 Compact Cylinders With Anti-Rotation (Type PEC) https://www.valves-direct.com/product/joucomatic-44956c050040-50mm-bore-40mm-stroke-pec50nat0040ldm-series-449-compact-cylinders-with-anti-rotation-type-pec/