1、100% brand new and high quality. 2、Made of high quality engineering plastics material, durable to use 3、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 drill Features: 1. 100% brand new and high quality 2. Made of high quality engineering plastics material, durable to use 3. 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 drill Specification: Condition: 100% Brand New Model: J137 Material: Engineering Plastics Weight: Approx. 393g / 13.9oz Size: Approx. 125 * 107 * 78.6mm / 4.9 * 4.2 * 3.1in Internal Diameter: Approx. 15.8mm / 0.6in Outside Diameter: Approx. 21mm / 0.8in Package List: 1 * Hand Drill Pump Note: This pump must be used in conjunction with a hand drill to pump water