Air bearing load movers made of flexible membrane, are being operated with compressed air, a thin film of air between the floor surface and the air movers is created by controlled air leak, there is no friction and makes it possible to move heavy loads or objects with relatively low force. Air skates are spaced apart to support and carry the load, available in a wide range of capacities, ability to transport heavy loads where carnes cannot gain access. Regarding air caster skids instruction, air bearing load movers application, air skates pictures, air casters price list, please kindly feel free contact with us. Professionally service hope will get your satisfaction. Shan Dong Finer Lifting Tools co.,LTD Skype: faithjiang888 Email: [email protected] Website: http://www.cargotrolley.com/