Amount of : Sufficient can satisfy your daily use and replacement demands. Features: the drip irrigation tube end cap fittings are suitable for 1/2 inches drip irrigation pipe joints; Water pressure: 30 , grips the tube to a leak-proof connection, and the twist adds fixation to the tubing for a connection time. to use: just the tube firmly into cap fitting and it will fit tightly without leaking, easy to install, no glue or other are required, if needed, you can soften of the tube with a hair dryer inserting it. material: the drip irrigation tube end cap fittings are made of plastic mainly, will not break easily, can you a long-term service, will bring you a using experience. Wide applications: the drip irrigation pipe fittings are compatible with 16-17 mm drip irrigation pipes, can also be applied for elevated beds, residential, farm, horticulture and agricultural watering applications. colour:Blue+black Material:plastic size:Approximately 7cm x 2.6cm x 1.6cm Contents: 12 x Drip irrigation tubing end cap plugs Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.