Steel chain roller skids raw material is high strength alloy steel, and low profile, can used on very narrow spaces. Regarding steel chain roller skids parameters, roller skates price list, moving rollers details, 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/