Features:1. 100% brand new and high quality2. Made of high quality engineering plastics material, durable to use3. By separating the motor of the conventional water pump and making full use of the mechanical kinetic energy of the household hand drill as a power unit, no power supply is required.4. The design can also be used as an accessory for household hand drills, which has the advantages of flexible use, low transformation cost and no damage.5. Micro pump for hand drillSpecification:Condition: 100% Brand NewModel: J137Material: Engineering PlasticsWeight: Approx. 393g / 13.9ozSize: Approx. 125 * 107 * 78.6mm / 4.9 * 4.2 * 3.1inInternal Diameter: Approx. 15.8mm / 0.6inOutside Diameter: Approx. 21mm / 0.8inPackage List:1 * Hand Drill PumpNote:This pump must be used in conjunction with a hand drill to pump water.