Drip Full pattern barbed Micro Bubbler 10 pack; create a drip wetting area up to 3 ft. circle with this unique bubbler that is self-piercing for insertion directly into 1/2 in. drip irrigation tubing. It adjusts from 0 ft. to 3 ft. throw for shrubs, trees, closely spaced plant groupings. For landscape watering applications that require higher flow than spot emitters or drippers.