1The use of high-quality engineering plastics has the advantages of waterproof and dustproof 2The speed can be adjusted freely according to the actual situation, simple and convenient 3Can work quickly and with large flowing, stable and sturdy, suitable for long time use 4This product is delivered with drive power, plug and play, fast and simple 5Low-cost flowing adjustment, multiple pumps in one, convenient and quick to replace pump tube 6Low noise, small space occupation, simple structure and maintenance-free 7Design three rollers with moderate pulsation, mainly used for aquarium quantitative liquid addition, calcium return, laboratory and industrial liquid sampling, etc.Item Type: Peristaltic PumpColor: Gray Pump Body Flowing: Adjustable, about 0.1ml-250ml/min Product Power Supply: AC100-240V 50/60HZ(commercial power) Product Size: Approx. 150 x 98 x 51mm / 5.9 x 3.9 x 2in Working Mode: Connect to power to start Adjust the flowing rate through the knob potentiometer1 x Peristaltic Pump1 x Power Plug1 x Hose1 x User ManualPlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.