STURDY MATERIAL: These watering by are made of high quality plastic which is sturdy and good for both indoor and outdoor use.Inner diameter 16mm EASY INSTALLATION: Connect the irrigation tube by simply inserting this toothed connector into the ends of the tube. No tools or glue are required. Press the tube firmly on the irrigation toothed connector to prevent leakage. Smooth the end of the tube with a blower if you notice that the tube is too stiff before inserting it. WIDE APPLICATIONS: These irrigation accessories are essential for irrigation, irrigation and sprinkler in orchards, flower beds, greenhouses and patios. Use the watering spikes to build a minimum maintenance watering yourself, save water and energy., Weight: 1.38670762798 pounds, Manufacturer: Rtxbvg