Features: Made of stainless steel + engineering plastic material, durable in use. High quality plastic body and stainless steel internal parts avoid corrosion. Suitable for using with electric drill with output of 350W or more. The water stream is determined according to the hand drill rate. The water pipe end which is marked IN is the water inlet and marked OUT is the water outlet. Specification: Condition: 100% Brand New Material: Stainless Steel + Engineering Plastic Color: Blue Size: Approx. 125*107*78.6 mm / 4.9*4.2*3.1 in Inner Diameter: Approx. 15.8mm / 0.6in Outer Diameter: Approx. 21mm / 0.8in Weight: Approx. 400g / 14.1 oz Package list: 1 * Electric Drill Water Pump Note: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.