Shan Dong Finer Lifting Tools co.,LTD produce air casters for more than 20 years, from the year of 1998, export air bearing casters to more than 70 countries and areas. 10 tons air casters, 16 tons air bearing casters, four air modular air casters, six air modular air casters, 20T air moving skates. Air caster is a pneumatic lifting device used to move heavy loads on flat, non-porous surfaces. Its operation is similar to a hovercraft, as it uses a thin layer of air as a way to float a very small distance off the ground. air casters are virtually friction-free, the force required to move them is very low, Air casters are also omni-directional, meaning they move with equal ease in any direction. Air casters require a smooth, non-porous surface in order to maintain lift and operate properly. Finer Brand air bearing casters power source is compressed air, with flexible, wear-resistant urethane diaphragm airbags. Regarding air casters package details,air casters factory in China, air casters pictures and price list, please kindly feel free contact us. professionally service hope will get your satisfaction.