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 flow is determined according to the hand drill speed. 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.1Made of stainless steel + engineering plastic material, durable in use 2High quality plastic body and stainless steel internal parts avoid corrosion 3Suitable for using with electric drill with output of 350W or more 4The water flow is determined according to the hand drill speed 5The water pipe end which is marked IN is the water inlet and marked OUT is the water outlet