The 22 Piece Precision Knife and Blade Set is ideal for making highly-accurate cuts in a seemingly limitless number of materials. Six interchangeable blade types can be used on anything from carpet and drywall to cardboard and wallpaper. The set includes a slender, 700 series handle for making finer cuts and a larger, 750 series for those tough, heavy-duty surfaces. Both handles are equipped with a locking screw chuck to hold the blades firmly in place, and also accept all industry standard knife blades. Includes a zippered case for storage.