drill pump - fine workmanship, plastic, durable and long service life. Features - large flow, stable performance, high efficiency, easy installation. Fast - The pumping speed is fast, 20-30 liters of water per minute (depending on the speed of the rig). EASY TO USE AND STORAGE - With all drill chucks installed, you can use a power drill to get the pump, easy and convenient to use. Small and lightweight design, easy to carry and easy to store. Flow Rate - Recommended speed is 1500-3500 rpm. Pump head and flow rate are related to speed. The higher the speed, the higher the head and flow. 1500 rpm, the pump head is about 1.5 meters, and the flow rate is about 15L/min. 3000 rpm, the pump head is about 3 meters, and the flow rate is about 30L/min. Note: Due to the difference of different monitors, the pictures may not reflect the actual color of the product. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. Specification: Color: Black Size: Approx. 126*63mm Material: Plastic Net Weight: Approx. 218g Tube Diameter: Approx. 15mm Drive Shaft Diameter: 8mm Round Shank Operating Temperature: Approx. 5-49 degrees Celsius (41-120 degrees Fahrenheit) Rotation direction: clockwise Package includes: 1*drilling pump 2*hose clamp 2*connector