Generous Package: there are 40 pieces of microfiber mop pads for each package, each measuring approximately 16.5 x 5.25 inches, are present in sufficient quantities to meet your needs; They are ideal for both residential and business applications Simple to Install: the mop heads fit a variety of systems, including the water spray mop system and other systems, and they fit 15 inches mop frames that have hook and loop fasteners; The quick installation will improve your ability to clean the hardwood floor