Total length: 5.2 inches / 13 cm; water outlet hole diameter: 0.05 inch / 1.4 mm. Irrigation angle: 360 degrees. Suitable for 4/7 mm (inner/outer diameter) tubing. Each dripper has 8 outlet holes at the top. Make sure the hose is softened before connecting. Soak the end of 1/4 inch tubing in very hot water before attaching to the dripper. A firm push with slight twisting helps secure the hose to the dripper. Directs water precisely where needed for a wide range of planting areas. Delivers water similar to a spray head in an underground system, ideal for pots, containers, ground cover, landscaped gardens, and more. Adjustable water flow: Rotate the outlet hole cap to control the flow rate. Adjust water output according to plant needs to promote healthy growth, conserve water, and reduce waste.