Structure: High quality copper wire Imported bearings from Japan Sturdy coils after high temperature and high pressure treatment High quality permanent magnet Wear resistant metal shaft High quality plastic back coverCertificates: ISO9001 CERTIFICATE SGS CERTIFICATE ROHS CERTIFICATE CUSTOMERS PRAISE MAILApplication:We also have motors dia from 10-50mm,applications as followings for your reference:Robots, power tools, machinery, sanders, medical equipment, seat drives, automatic curtains, valves, electric surgical screwdrivers, medical analyzers, m...