【Oscillating Knife Blades】EZARC introduces the multitool hook knife blade set. With its special hooked design, it provides fast and clean cuts. Operating much faster than traditional hand tools, it saves a significant amount of time and effort,【Twin-Hook Design】The unique twin-hook design facilitates fast and neat cutting. One hook is designed for pull-through applications, while the other is geared towards push-through tasks,【High Quality Materials】These oscillating hook knife blades are made from heat-treated premium alloy steel, enhancing hardness and Increases product lifespan by 50%,【Save Time, Cut Clean】Hook knife cutter blade is ideal for cutting and triming roof shingles, carpet, cardboad, asphalt shingles, thin PVC floors, artificial turf etc,【Universal Compatibility】Our quick release multitool blades with universal interface system are compatible with most brands ofoscillating tools on the market like Fein, Ryobi, Milwaukee, Rockwell, Black & Decker, Porter Cable, Craftsman and More. NOTE: Not recommended for starlock interface system