If you live in California, our exclusive Flow-Boost Kit lets you enjoy faster, more powerful showers with up to 40% more water pressure and coverage. California state allows only low-flow shower heads with 1.8 gpm flow regulators to be sold to its residents. But you can upgrade that 1.8 gpm flow regulator to a 2.5 gpm federal standard used in most states. Our Flow-Boost Kit makes this replacement super-easy. It includes a 2.5 gpm Flow Regulator, a Mini-tool, and How-to Instructions. Our best 10 pick : This product has been vigorously tested by our professional team of US showerhead experts to highest US quality and performance standard. Deluxe 6 setting hand shower: Can be used as Overhead or Handheld shower, High-power Click Lever Dial, Ergonomic Grip Handle, Rub-Clean Jets for easy cleaning and preventing lime buildup, all chrome finish including face . Includes: Angle-adjustable overhead bracket for hands-free operation at desired angle, extra flexible reinforced 5 ft stainless steel hose for super-flexible reach and mobility, Washers, Plumber’s Tape, Stunning gift box designed in USA with sophisticated, upscale look for a perfect gift. Easy Tool-free Connection: No need to call a plumber. Fits any standard shower arm. Best American Lifetime Warranty from Top US Shower Brand with live American customer service representatives in US to assist you on the phone or by email.