Air Casters also known as four modules air casters, six modules air casters, air movers, air bearing casters, air film transport, air rigging systems, air bearings and so on names. Four modules air casters, six modules air casters also called modular air casters. Air Casters use air as power source, it is low push force. Just one or two person can move up to 20 tons load easily. Air Casters have no damage to floor. Air powered operation makes it safer for use in hazard areas. Air Casters protect your expensive floor, with no mark on the floor. And keep the heavy duty loads balance, protect your loads too. Want to know the price of air casters? Call us, best service is waiting for you. Shan Dong Finer Lifting Tools co.,LTD Email: [email protected] TEL:08618954718083 https://www.airbearingcasters.com/