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Continue to ChatG450A4S50160A00 - This product will be phased out by September 2020. It can be replaced by Aventics Series TRB. ROUND ALUMINIUM BARREL WITH TIE ROD CYLINDER ISO 15552 DOUBLE ACTING WITH ISO 16030 "G" PORTS D=40 STROKE: 160mm WITH HARD CHROMED SINGLE ROD MOUNTED WITH D https://www.valves-direct.com/product/numatics-g450a4s50160a00-40mm-bore-160mm-stroke-g1-8-series-g450-dynamic-rod-locking-device/