With the Bosch 4 in. Serrated Knife Segment for OIS Tools in your collection, you'll easily be able to cut a multitude of materials, including insulation, boxes and even roofing shingles. Accessories represent the secret weapon in getting the most from an oscillating tool. Bosch offers the widest variety of accessories, from specialty blades to cutting saws, using the best materials and design methods. And thanks to the OIS adapter, Bosch accessories can be used on a variety of oscillating tools from other manufacturers.