Rotating moving dolly every wheels can swivel 360 degree maneuverability, rotating moving skates capacity from 2 tons to 30 tons one set. Rotating moving dolly normally applied on moving and handling heavy duty loads in confined and narrow spaces. Rotating moving roller skate is easy to change of direction, newly designed roller skates moves heavier loads safely and easily. please kindly feel free contact with us. Professionally service hope will get your satisfactioan. Shan Dong Finer Lifting Tools co.,LTD