Transporter trolley the wheels can be metal rollers, polyurethane wheels, nylon wheels, steel wheels as per the floor condition. Load moving trolley normally three sets or more than three set works together. Load moving trolley is one kind of moving and handling equipment. Load moving trolley can be works help by hydraulic toe jack and lifting pinch bar. Hand cargo trolley has one kind called rotating moving dollies,which rollers can be swivel 360 degrees to allow for easy change of direction. The rollers will not damage floors and will not leave marks. Regarding Hand cargo trolley instruction and details,Transporter trolley specification and pictures Load moving trolley application,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/