This Irwin 10504238 general-purpose knife has a lightweight, but hard-wearing aluminium body to hold up on the job. A magnet holds the working blade in place, and a captive screw prevents loss during blade change. The quick-change mechanism allows for easy blade removal, or reversal, without opening the knife, which has a durable, 3-position slide allowing different blade lengths to be used. There is a one touch easy access to spare blades, and the tough construction is designed to fit the hand comfortably when in use. Includes 3 IRWIN blue blades.