... ,Compact Dimension Plastic reducer/gear motor with high quality/(PVC, PP, PE, PA, PC, ABS .etc)Series general helical gear box We ,Lucheng ... are made of high strength cast iron. Gears and shaft gears are finished with gas carburizing process and precise grounding ... hesitate to contact me. Plastic reducer/gear motor with high quality/(PVC, PP, PE, PA, PC, ABS .etc)Series general helical gear box