The KOHLER hybrid energy system is a first-of-its kind 30-year power solution for touchless faucets. When combined with Insight Technology, this system provides an environmentally-friendly, virtually maintenance-free electronic faucet. 0.5 gal/min (1.9 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.