Shark Sonic Duo Hard Floor Cleaner (ZZ500) (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes a 90-day warranty Shark Sonic Cleaning Technology - 1000 scrubs per minute, perfect for Hardwood, Tile, Vinyl and Stone Microfiber Washable Pads for Cleaning, Scrubbing, and Polishing AirGlide Maneuverability & 180 Degree Swivel Steering Non-toxic gentle cleaning