Suitable for electric drills with power over 350W Material: Stainless steel + engineering plastic Size: approx. 125mm x 107mm x 78.6mm/4.92in x 4.21in x 3.09in Inner diameter: 15.8mm/0.62in Outer diameter: 21mm/0.83in Quantity: 1 pc Transition: 1cm=10mm=0.39in Package includes: 1 x Water Pump 1. Before placing an order, please note that the color and grain of the item shown in the pictures may differ slightly from the actual item. 2. Since the size above is measured by hand, the size of the actual item you received may differ slightly from the size above. Small and lightweight, the electric pump is ideal for electric drills. Ideal for transferring light liquids such as fresh water, sea water. Robust plastic body and internal stainless steel parts Inner diameter: 15.8 mm/0.62 inches, Outer diameter: 21 mm/0.83 inches. Features an energy-efficient design that saves money while providing a system that is good for the environment.