ISO Nonstandard Single Kb-Type Sprocket (Welding hub) Xinghua Donghua Gear Co., Ltd. Base Info Model NO.:sprocketUsage:Transportation ChainSize:as Your DrawingsStructure (For Chain):Roller ChainTrademark:DONGHUAGERASpecification:CEOrigin:Xinghua, China Description Pre:Magnetic Guideway Next:Air Gun Welding Repair Special Platform