Gardena Adjustable Inline Drip Head is part of the Micro Drip System for irrigation of shorter plant rows with varying water requirements Using the Inline Drip Head, the required water amount can be adjusted and regulated to 0 to approx. 20 litres per hour The cover is detachable and has an integrated cleaning needle that allows easy cleaning of a dirtied drip head The patented "Quick & Easy" connection technology ensures especially easy installation to a 4.6 mm There are 10 drip heads and 1 cap is included in this pack