The Milwaukee Hand Tools Self-Retracting Safety Knife has 2 blade positions for increased cutting depth control. The blade retracts when the button is released. The heavy-duty, full metal body conveniently holds up to 5 blades inside the handle. A tool-free, thumb-screw mechanism allows quick blade change without the need for any extra tools. Its integrated wire stripper eliminates the need to look for an additional tool and cuts wire up to Ø5mm².