Rain Bird MBH4PKS Drip Irrigation Micro-Bubbler on Stake, 180&deg; Half Circle Pattern, 0 - 3' Spray Distance, 4-Pack Staked Micro-Bubbler directs water exactly where you need it in a wide variety of planting areas Emits 8 streams of water similar to a sprinkler head on an underground system Simply twist cap to adjust spray distance from 0 to 3' Offers finger-tip flow control with a shut-off option; 180 half circle watering pattern Barbed fitting for quick attachment to 1/4" Drip tubing Constructed of highly durable UV and chemical-resistant materials to assure long life 4-pack of half circle staked Micro-Bubblers in convenient plastic bag