The KOHLER Hybrid Energy System is a first-of-its kind 30-year power solution for touchless faucets. When combined with Insight(TM) technology, this system provides an environmentally-friendly, virtually maintenance-free electronic faucet. 0.35 gal/min (1.3 l/min) flow rate. Factory set 30 second max. continual run cycle. Vandal-resistant aerator. 24" (610 mm) flexible supply hoses for easy installation. 6-3/16"(157 mm) spout reach. Less drain. Single-hole mounting. Brass construction.