Main Parts Motor: Permanent Magnetic Synchronous DC Motor Controller: Frequency Conversion Controller Frame & Shaft: 304# Stainless steel Float: HDPE Impeller: PPR Gear Box: / (No Gear Box) Technical Parameters Item No.: SLS-0.75-1 / SLS-0.75-2 PCS of Paddles: 2 PCS of Floats: 2 Power (KW): 0.75 Voltage (V): 380/220 Oxygen-enrich Capacity (kg/hr) : 1.71/1.63 Paddle Diameter (cm): 64