Cast Brass Waterway with Flexible Supply Hoses: Strong and durable. Less potential for leaks. Ceramic Disc Valve Cartridge: Assures smooth, precise valve control and a lifetime of drip-free, maintenance-free performance. Adjustable Hot Limit Safety Stop: Limits the amount of hot water allowed to mix with cold. Reduces the risk of accidental scalding. Low Lead: Meets NSF Standard 61/Section 9 & Prop 65 lead requirements. Exclusive Speed Connect Metal Drain: