Simply the best shut-off valve available. Dramm's #300 Brass Shut-Off Valve provides fingertip water control at the end of your greenhouse hose. A quarter turn of the large ergonomic handle and the water is off. Full water flow design. Made in the USA from brass, durable seals and a hard chrome plated ball to provide years of service. 3/4 threads. The 300 Brass Shut Off is the gold standard for hand watering.