Air powered moving equipment powered source is compress air, which is environmentally friendly—with no pollution. Air bearing moving system moving heavy loads with no friction, will protect your floor. This is perfectly for clean rooms. Air rigging system is a great way to move the heavy loads, our air rigging system is compact design and highly maneuverable controls, can used for any areas. We have five kinds air bearing rigging system: 10 Tons capacity air bearing caster, 16 tons capacity air power moving dollies, 20 tons air bearing moving system, 32 tons air rigging system. 48 tons air skates. From our website, if you do not fine what you want, it is possible to adapt, or customize one to suit your need. Please feel free to contact with us. hope we will get your satisfaction. Shan Dong Finer Lifting Tools co.,LTD Email:sales@cargotrolley.com http://www.cargotrolley.com/