Chain pulley blocks is heat treated spur gear which is efficiently designed. Chain hoists is open frame design, which is easy for self-cleaning, quick load sheave inspection and easy hoist maintenance. Manual chain hoists are designed for four times rated loads, have overload protection available. Our company Shan Dong Finer Lifting Tools co.,LTD produce all kinds of manual chain hoist for more than 20 years with higher quality and competitive price. Our manual chain blocks are very durably with alloy steel structure. Chain block application: chain block is easily operated by hand chain, and is suitable for use in factories, mines, farms, construction areas, shipyard, docks and warehouse for loading and unloading goods.Regarding Manual chain hoist price list, Chain pulley blocks details, Manual hoist structure and price list, lever hoist prices,please kindly feel free contact with us. Professionally service hope will get your satisfaction. Shan Dong Finer Lifting Tools co.,LTD Skype: faithjiang888Email: sales@cargotrolley.com Website: http://www.cargotrolley.com/