Heavy duty load moving skates capacity from 1 ton to more than 1000 tons, some model of moving skates just can go straight, some can swiveled direction. Hand moving trolley is free friction, or less friction with the floor, need less power to pulling or pushing the loads. Normally moving tools have follow model: roller skids, machinery skates, transport trolley, lifting jacks, and so on. Roller dollies capacity from 2 tons to more than 1000 tons, ODM, OEM is workable as requirement. The color can be depend on customer asked. More details please kindly feel free contact with us. Professionally service hope will get your satisfaction. Shan Dong Finer Lifting Tools co.,LTD