Description Compact yet Powerful: mini peristaltic pump is compact and runs quietly, fits into tight spaces while still delivering powerful performance, easily integrated into your projects or systems Flow Direction: DC6V or DC12V miniature self-priming pump, flow direction can be easily controlled by switching positive and negative wiring, allowing you to easily change the direction of water flow Adjustable Flow Rate: 250-300mA Self priming Liquid Pump delivers a maximum flow rate of 27ml or 82ml or 150ml per minute. (Optional: 9 - 27ml/min, 27 - 82ml/min, 65 -150ml/min) Metal Construction: Sturdy structure ensures performance in demanding environments with operating temperatures from 0–40°C and humidity below 80% Wide Application: DIY mini peristaltic pump liquid pump dosing pump is ideal for various applications where precise control of fluid movement is required, such as DIY projects, laboratory experiments, biochemical analysis, water treatment and more Specification: 3.2cmx2.3cm/1.26inchx0.91inch Mounting Hole Spacing: 4.85cm/1.91inch Size Chart:DC 6V, 65 to150ml/min Flow Rate,3x5mm Tube Package Includes: 1 Piece MiniPeristaltic Liquid Pump (As you choose) Note: Please allow 1-3 mm error/1-3g weight error and actual product color may vary due to lighting conditions.