The Adjustable Height Aluminum Gantry Crane with Pneumatic caster AHA-15-8-10 Combines Lightweight And Rigid, Sturdy Construction Into One Unit. The All Aluminum Construction Of This Gantry Crane Makes It Corrosion Resistant And Perfect For Outdoor Use. The Lightweight I-Beam Allows Height Adjustment Without The Need Of A Hoist Or Fork Truck. All Pined Connections Make It Possible For Single Person Set Up And Take Down In Just Minutes. Included Are Two (2) Straps, Allowing one person to transport. Four-Way locking pneumatic casters included.