Details of bruehes  :

  1) 100% raw carbon power .

  2)  With good condactivity ,grindability,inverting...

  3)  Every micro contact point be made by the auto machine....

  4)  Various of micro-motor brushes suit for 550,540,750,280 motors.

  5)  according per customers'designing pictures , size ,cooper content ,and normal max speed.