high precision gear part,internal gear parts 1.100% high quality. 2, Best ... shaft,precision ground shafts Since 2001, Dongguan Jiacai Hardware Co.,Ltd, is a leading manufacturer of metal products, Owned import & ... tumbled.5) Quality assurance in accordance with ISO9001: 2008 6) Part size: Diameter from 0.5mm to 600mm 7) Tolerance: ... , Russia, Brazil, Iran and Singapore etc high precision gear part