①. Drill pump with fine workmanship, made of plastic, designed for durability and extended service life. Features include large flow, stable performance, high efficiency, and easy installation. The pumping speed is fast, with a capacity of 20-30 liters of water per minute (depending on the speed of the rig). Easy to use and store - with all drill chucks installed, a power drill can be used to operate the pump, making it easy and convenient to use. ②. Small and lightweight design, easy to carry and 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. At 1500 rpm, the pump head is approximately 1.5 meters and the flow rate is about 15L/min. At 3000 rpm, the pump head is around 3 meters and the flow rate is about 30L/min. ③. Note: Due to differences in monitors, product color may vary slightly from images. Manual measurement may result in a 1-3mm error. Thank you for your understanding. ④. 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 clamps, 2*connectors.