Abstract: A tool for cutting the sealant surrounding a windshield of a vehicle comprises a handle for gripping by a user to which a blade is removably attached. In particular, the blade is received in a blade holder portion forming a channel for receiving the blade and holding a substantial portion of the sides of the blade. In addition, the blade can be quickly removed and replaced by manually actuating a blade release mechanism. The blade release mechanism is also configured to automatically engage a blade and secure the blade relative to the blade holder when the blade is properly inserted into the blade holder. A pull handle is secured relative to an end of the blade holder as with a cable pivotally mounted to the end of the blade holder at a position advantageous for applying a force to the blade when cutting the sealant surround the windshield of a vehicle.