... Dimension Plastic reducer/gear motor with high quality/(PVC, PP, PE, PA, PC, ABS .etc)Series general helical gear box We ,Lucheng screw ... requirements.2.Transmission RatioFeatured many closely divided ratios and wide range of them. Very big final ratios can be obtained ... hesitate to contact me. Plastic reducer/gear motor with high quality/(PVC, PP, PE, PA, PC, ABS .etc)Series general helical gear box