... -Double-acting application. -Durable ductile iron cast components. Log Splitter hydraulic Cylinder-3500PSI (233BAR) max continuous pressure withstand shock loads ... pinhole. -NPT, SAE and ORB ports available.-Great to build log splitters, presses, tube benders forming machines, etc.Item#BoreInch(cm ... .0(34.2) Note: NPT,SAE or ORB port available. Log Splitter hydraulic Cylinder