The square cutter also ensures the safety in the cutting process by reducing the risk of accidental injury. Suitable for plasterboard, drywall and wood. Do not use it for cutting cement walls, bricks or hard metals. This square groove knife is made of high-quality high-speed steel and special cutting technology, which is very strong and wear-. The sawtooth design ensures a stable and smooth cutting experience, and is rust-proof and . characteristic The embedded cutting design on the oscillating tool of this square groove milling cutter provides better stability and less vibration when in use, protecting you from and gypsum board fragments when working., Manufacturer: Akfldms