1:20 Turbine Set 0.4M 20T 3mm Brass Worm Reduction Gear 90-Degree Drive DIY Car Model

High-concerned chemical：None isCustomized：Yes Pressure Angle：/ Standard or Nonstandard：Standard Processing：Hobbing Model Number：TINY 1/20 Tooth Profile：Spur Gear Material：Copper Origin：Mainland China Shape：Worm Certification：NONE

High-concerned chemical: None isCustomized: Yes Pressure Angle: / Standard or Nonstandard: Standard Processing: Hobbing Model Number: TINY 1/20 Tooth Profile: Spur Gear Origin: Mainland China Shape: Worm Certification: NONE