Features: 1. Small in size 2. Very low noise - Harden-Teeth with Grind 3. Highest precision gear ensures minimum rotation vibration 4. No maintain require 5. Light weight - Aluminum Casing 6. Durability - Helical harden-Teeth 7. Power:0.075kW(1/10HP) to 3.7Kw(5HP) 8. AC motor Single phrase or 3 phrase 9. Gearmotors ratio from 1/3 to 1/1800