This multi tool blade works with your multifunction power tool to make fast, clean cuts in a variety of soft materials like carpet, cardboard, leather, vinyl, linoleum, rubber, insulation, foam and plastic. Oscillating cutting action makes cutting easy to control with less hand fatigue and a serrated knife edge allows for aggressive slotting and cutting. The multi tool blade is designed with a universal arbor that fits Chicago Electric, Bosch, Craftsman, Dremel, Rockwell and Fein MultiMaster tools.