quick release: Squeeze the buttons to remove the knob and quickly change the roll. * heavy duty, weighted base: Weighted stainless steel base keeps the holder steady. * raised edge: Keeps paper towel tucked in place. * Raised, grooved edge along base designed to keep the roll from unraveling * Measures 7-11/16 by 7-11/16 by 13-7/8 inches; 5-year warranty