Underhill Magnum ultra Max premium Pro series are the most versatile & rugged hose-end nozzles available for syringing sports fields or golf courses. Featuring robust "firefighter quality" Construction, ultra Max nozzles are designed for INFIELD conditioning & as a hand-watering supplement for dry, patchy turf. Also for Stadium & playground wash downs & equipment clean-ups. The turboshift model has a dual variable Flow that can be shifted from light coverage to higher volume Fog, jet stream, or fan pattern. Ideal for golf course isolated dry spots on greens & fairways. This high volume model opens at 12-17 GPM & can be "turbo shifted" To 20 to 43 GPM. The ergonomically-designed pistol grip or firefighter grip (Sold separately) have sturdy ball valve sand push-pull on/off control handles. 2/3" Inlet. Leak-proof & virtually indestructible, ultra Max nozzles are constructed from high tech composite internal material, Aircraft aluminum, brass & TPR rubber.