Fine workmanship, plastic, durable and has a long service life. Large flow, stable performance and high efficiency, easy installation. Pumping speed is fast, can pump 20-30 L water per minute(depends on the rpm of drill). Install all the drill chucks, you can use the electric drill to get the pump, easy an convenient to use. Compact and light weight design, portable and easy to store. The recommended speed is 1500-3500 rpm. The pump head and flow are related to the speed. The higher the speed, the higher the head and flow. 1500 rpm, the pump head is about 1.5 meters, the flow is about 15L per minute. 3000 rpm, the pump head is about 3 meters, and the flow rate is about 30L per minute. Specifications: Color: black Size: Approx. 106*37*64mm Material: Plastic Net Weight: Approx. 218g Inner Tube Diameter: Approx. 15mm Transmission Shaft Diameter: 8mm Round Shank Working Temperature: Approx. 5-49(41-120) Direction Of Rotation: Clockwise Package Included: 1*Drill Pump 2*Hose Clamp 2*Connector Notes: Due to the difference between different monitors, the picture may not reflect the actual color of the product. Please leaving a message before you give the bad feedback, if the products have some problems. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.