Product Description Welcome to Visit our wuyi CHINAMFG chain factory in CHINA. all kinds of chain couplings, including as belows: 4012-4014-4016 ,,6018,6571,8018,8571,1571,12571 and so on.   Item Sprocket / plate wheel/gear Standard DIN, KANA, ANSI, ISO, etc Material C45, stainless steel SS304 & SS316, Cast iron Bore Pilot bore, finished bore, taper bore Surface Treatment … Continue reading China Custom High Quality Machinery China Factory Transmission Drive Roller Chain Coupling Gear gear coupling