DIG's 300 series adjustable micro sprayers offer quart-circle spray patterns. They have an adjustable flow feature of 0 to 26.1 gph at 25 psi. The 309B model with 10/32 thread, is fully assembled with a 13 in stake, 12 in PE riser and 1/4 in barb. These micro sprayers have an adjustable knob that allows control of flow to reduce or increase the diameter or wetting area of the spray pattern. Used for residential gardens, flowerbeds, groundcovers, shrubs and trees, the adjustable micro sprayers are ideal for areas where low-flow overhead irrigation is desired or for areas where drip emitters or conventional sprinkler systems are not practical.