Features: 1. It is made of engineering plastic material. The pump head is designed to be simple disassembly type, which is convenient for cleaning and maintenance. 2. Snap on design, with self-priming function, makes it very easy to open and close the pump head. 3. The medium flow direction of peristaltic pump depends on the connection method of positive and negative stages of power supply, and the terminal can choose the positive and negative stages at will. 4. It has good sealing performance, convenient hose replacement, stable and reliable performance, and can be used at ease. 5. It is widely used in experiments, biochemical analysis, pharmacy, fine chemical industry, biotechnology, pharmacy, products, ceramics, water treatment, environmental protection and other fields. Specification: Condition: 100% Brand New Item Type: Dosing Pump Material: Engineering Plastic Color: Black, Blue (Optional) Applicable Power Supply: DC 12V Working Environment: Temperature: 0-40°C, Relative Humidity: <80% Flow Range: 0.1-100ml/min Speed Range: 0.1-100rpm Weight: Approx. 86g / 3oz Size: Driver Size: Diameter: Approx. 27.6mm / 1.1in Height: Approx. 37.9mm / 1.5in Pump Head Size: Diameter: Approx. 31.7mm / 1.2in Height: Approx. 20.1mm / 0.8in Pump Tube: Inner Diameter: Approx. 2mm / 0.08in Outer Diameter: Approx. 4mm / 0.16in Package List: 1 x Dosing Pump Features Organic Energy: Enjoy the convenience of a solar-powered oxygen pump that eliminates the need for additional batteries or plugs, saving energy and hassle. Adjustable Angle: Effortlessly maximize solar energy absorption with the adjustable angle solar panel, suitable for both floor and wall mounting, ensuring optimal performance. 3 Working Modes: Choose from strong, medium, and weak working modes to cater to various usage scenarios, providing flexibility and efficiency. Multi Purpose: Versatile and suitable for fish tanks, swimming pools, ponds, and aquariums, this air pump increases fresh air to meet diverse needs, enhancing the environment for aquatic life. Note: The Package includes a long air pipe for customizable use, providing flexibility to cut it into pieces as needed and connect with the Y connector for easy setup.