[Drip Irrigation Connector]: You will get 200 black direct heads. The drip irrigation connector can effectively save the water needed for irrigation, easily transport water to anywhere, bring more convenience to your life. [for 4/7" tube]: Suitable for connecting tubes with an inner diameter of 4mm and an outer diameter of 7mm. Our drip irrigation accessories help to build a practical 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 tube securely onto the hoop for a very tight fit that won't leak. If it's convenient, you can also use a heat gun or hair dryer to soften the end of the tube before inserting it. [fitment]: The durable irrigation straight joint is made of environmentally friendly materials, high strength and chemical resistance has the advantage of waterproof, durable, lightweight and non-deformation. step, easy and longer