All items can be supplied in accordance with ANSI/ASTM standards with parts tolerance as low as +/-0.5mm or +/-0.020". Forgings1. Supply for OEM2. High quality and reasonable price3. High torsion strength and fatigue strength4.100% tested for the accuracy and quality5. Material: variety material6. We have quality control system to guarantee best product quality.7. We have professional inspectors. ...