Features: 100% brand new and high quality The pump head is designed for easy disassembly, easy to clean and maintain Flow direction: you can control the flow direction by the positive and negative connect. Widely used in the field of experimental, biochemical analysis, pharmaceuticals, fine chemicals, biotechnology Fine appearance, compact structure, mini size for space-saving installation and low consumption Specification: Product name: micro peristaltic pump Material: metal Applicable voltage: 6V Type: Right Angle black, Flat black(Optional) Working conditions: temperature 0 to 40, relative humidity, < 80% Medium flow direction: depends on the positive and negative connection of power supply, and the terminal can choose any positive and negative Flow range: 0.1-100 ml/min Speed range: 0.1-100 RPM Drive size (Dia. x H) : 27.6 * 37.9mm / 1.1 * 1.5in Pump head size (Dia. x H) : 31.7 * 20.1mm / 1.2 * 0.8in Auxiliary pump pipe (ID x OD) : 2.5x 4.7mm Weight: 88 g / 3.1 oz(approx.) Package list: 1 x Miniature Water Pump