| Shape | Cast iron master /crown Ring gear/pinion/pulley | Standard or Nonstandard | Nonstandard | Tooth Profile | Helical Gear | 
| Material | Casting Iron GG20/25/35 ,steel process CNC  | 
			Processing | Hobbing | Pressure Angle | 20 Degree | 
| Place of Origin | HeBei,China(Mainland) | Model Number | gear ring | Warranty | 2 Year | 
| Free Sample | Iron crown ring gear set | OEM service | Yes | Certification | ISO9001 |