Usage Tips:Product material: polypropylene Product use: connect drip irrigation belt, drip irrigation pipe, water belt, PE pipe, etc. Large quantity: the package includes 8 packs of pipe fittings, large quantity to meet your needs. Good quality: they are made of molded plastic, which is strong and durable. Suitable size: suitable for pipes with an inner diameter of 13 mm and an outer diameter of 16 mm. Quick and simple to install: these pipe fittings are easy to assemble without additional tools, a great solution for pipe fittings. indoor appliances and outdoor gardens, and provide efficient, durable and leak-proof connections for your pipe system. Wide applications: the pipe fitting can be applied for washing machine, garden watering, irrigation situations and more. Scope of delivery: Eight pieces Note: The data is manual measurement, please allow 1-77cm error, due to differences between light and screen, there will be a certain difference of color, the specific received in kind shall prevail.