Durable and These Tree Watering Rings are made from durable weather resistant PVC material for long lasting use. They are tear resistant and can withstand damage from tree branches. When filled, they are able to withstand the pressure without failing. Function upgrade The water inlet features a screw cap for easy opening and filling. The inlet diameter is 30 millimeters (1.18 inches) and is sufficient to accommodate most common fittings up to 25.40 millimeters (1 inch) in length. The system is equipped with a slow release drip to ensure even distribution of water and to help prevent blockages. Water saving These watering rings water efficiently and slowly, reducing the need for frequent manual watering. By minimizing water waste as much as possible, they provide water where it is needed and make tree care easier and more cost effective. Available sizes and performance Provide 10/15/25 gallon watering bags to promote growth of trees, and slowly release water within 58 hours. This deep nourishment reaches directly to the roots of the tree. They are very suitable for newly transplanted trees or trees in hot summers, as they can retain the water needed for growth. Practical use scenarios Newly transplanted trees in hot or dry conditions: install the rings and use the accompanying watering bags to deliver sustained moisture to the root zone during the critical establishment period. Trees in hot summers or droughtprone areas: use the slow release bags to provide a controlled, longlasting water source, reducing the frequency of manual watering. Landscape maintenance or nurseries: manage multiple trees with consistent, loweffort watering that delivers water directly to the root zone for healthier growth.