This UltraWiz Coldy Short Knife's high-strength coated cable and Delrin handle help with eliminating scratches to the vehicle during your auto glass repairs. Set the blade with one screw and you'll be ready to start cutting. The blade is easily adjustable for the different kind of windshield jobs. This UltraWiz Coldy Short Knife includes one long blade. Extra blades are sold separately, please click here to take a look at our selection. Trust the durability and strength of UltraWiz for all your windshield cutting needs.