[drip irrigation connector]: you will get 200 black direct heads. The drip irrigation connector can effectively save water needed for irrigation, easily carry water to everywhere, bring more convenience to your life. [for 4/7" tube] : Suitable for connecting tubes with inner diameter of 4mm and outer diameter of 7mm. Our drip irrigation accessories help build a convenient and useful irrigation system that makes gardening more convenient and efficient. [Easy to Install]: These drip irrigation connectors are easy to install without any additional tools. Simply push the tubing securely onto the hoop for a super snug fit that won't leak. If it suits you, you can also use a heat gun or a hair dryer to soften the end of the tube before inserting it. [equipment]: The durable irrigation right seal is made of environmentally friendly materials, high strength and chemical resistant has the advantage of anti-corrosion waterproof, durable, lightweight and not deformed, easy and longer service life. < p>[Wide Application]: The drip irrigation barbed wire connector for 4/7mm pipes helps build a maintenance-free irrigation system. Ideal for gardens, greenhouses, pergolas, terraces and other agricultural irrigation systems.