Cross Dbl Acting Cylinder Same as DBASAE Series except rod extension is threaded for mechanical depth control on applications requiring a mechancial depth control.2500 PSI, Double Acting w/ threaded rod for depth control    Bore: 4"    Depth Control: without    Pin Diameter: 1"    Port Size: 1/2"    Retracted Length: 20 5/8"    Rod Diameter: 1 1/4"    Stroke: 8" Various Makes DU SERIES
