Size details: the white washing drain hose adapter has a outer diameter of 20 mm/ 0.78 inch, which is suitable for water pipes are directly 20 mm inside, fitted with 18 - 32 mm drain hose for a stronger connection; Please allow slight dimension error due to manual measurement Quality material: each washer extension adapter is made of quality Plastic , resistant to corrosion, high temperature and not easy to break, with strength; And Metal material are rugged for stable and secure , which can serve you Drain hose connector kit: which is suitable for various kinds of washing machine hose to discharge waste water Simple process: you will insert the washing machine connector into the drain horse directly, and 't need to remove the previous hose; To install the hose for added strength, a screwdriver to help you; The installation process is simple and fast Wide application: a special design of this washing drain hose connector set allows the interface and the water pipe interface are and watertight; This drain hose kit is proper for connection or extension to a washing machine, dishwasher, or other water pipes Colour:White+silver Material:Plastic + Metal Package Contents: 4 * 2 * connector Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.