National 500 Series Crane Parts, Includes: Hydraulic Swing Motor W/ Slewing Ring, Slewing Ring: 25.5” ID, 8-Valve Hydraulic Manifold, Main Hydraulic Lift Cylinder: 2.25” Diameter Pins, 62” Cylinder Length, Cable Spool Hoist W/ Hydraulic Motor - Note: Shipping Available At Buyers Expense