[Rinse Residue Quickly] The sink glass rinser has no on/off switch,simply push down for powerful rinsing action,blast away unsightly gunk, goo,and crud. [Sturdy Material] The cup cleaner for sink made from Hard SUS304 stainless steel and built to last. [No-Leak] Provide enough parts,including waterproof adhesive tape, hose,copper sprinkler as well as the valve, nut, washer, etcs for connecting all parts. [Easy to Install] The glasses cleaner can be connected to either the hot or the cold water supply line. [Fit Cup Caliber] The cup rinser rinses an incredibly wide array of cups, bottles, and glasses. Minimum drinkware opening size is 1.18" while the maximum drinkware opening size is 4.33". [Warranty]If there's any problems with the cup washing you received, please feel free to contact us.