Features 1、100% brand new and high quality. 2、Flow direction of peristaltic pump depends on the mode of connection of positive and negative terminal which you can choose randomly. 3、It has been widely used in the fields of experiment, biochemical analysis, pharmacy, fine chemical industry, biological engineering, food, paper industry, etc. 4、It is small and has the advantage of low noise and no pollution. 5、It has high accuracy and it is convenient to change pump pipe. Specification Features: 100% brand new and high quality. Flow direction of peristaltic pump depends on the mode of connection of positive and negative terminal which you can choose randomly. It has been widely used in the fields of experiment, biochemical analysis, pharmacy, fine chemical industry, biological engineering, food, paper industry, etc. It is small and has the advantage of low noise and no pollution. It has high accuracy and it is convenient to change pump pipe. Specification: Condition: 100% Brand New Applicable Power Supply: DC 6V Working Environment: 0-40℃ Pump Pipe(inner*outer diameter): #1 Approx. 1*3mm #2 Approx. 2 * 4mm / 0.1 * 0.2in #3 Approx. 3 * 5mm / 0.1 * 0.2in(Optional) Flow Range: 0-23ml/min, 0-65ml/min, 0-150ml/min Speed Range: 0.1-60rpm Current: 250-300 ma Motor Size: Approx. 32 * 23mm / 1.3 * 0.9in(diameter* height) Center Distance of Installation Hole : Approx. 48.5mm / 1.9in Package List: 1*Peristaltic Pump Package List