Structure: High quality copper wire Imported bearing form Japan Sturdy coil after high temperature and high perssure treatment High quality permanent magnetWear resistant metal shaft High quality plastic back coverCertificates: ISO9001 CERTIFICATE SGS CERTIFICATE ROHS CERTIFICATE CUSTOMERS PRAISE MAIL Applications:We also have motors dia from 10-50mm,applications as followings for your reference:Dental equipment, drone, medical equipment, tattoo machine, tattoo pen, beauty pen, electronic lock, scar treatment instrument, nail gun, blood analyzer, electronic door lock, power t...