1.Rough in valve is made of solid brass, it is one of the most durable materials in plumbing. Along with many years of supreme performance, this wall mount tub filler resists to corrode and leak. 2.High flow rate of 7.31GPM@60PSI, this wall mount bathtub faucet can fills up your tub in minutes. 3.This wall mount tub faucet in matte black finish can perfectly matches any modern style decoration, resists to corrode, tarnish or discolor for a "like-new" look for life. 4.Tub faucet with single easy turn lever handle controls water and temperature, smoothly and effortlessly. 5.This wall mount tub filler using drip free cartridge ensuring long lifetime using. To save time and extra expense, please show your plumber the installation video under the main image on product page before installation. Please keep the user manual properly, if you need the after-sales service in any time, please contact the SUMERAIN support team.