Festool 496307 Aluminum/Plastic 56-Tooth Saw Blade 56 tooth; 25mm kerf; 20mm arbor;-5 deg hook angle; TC Designed for cutting non-ferrous materials, especially aluminum; also useful for acrylics and hard plastics Oversized 20mm arbor enables more secure fastening of the blade to the saw, reducing vibration for more precise cutting Thin kerfed blades meet less resistance, for more efficient cutting, and produce less material waste Laser cut expansion slots reduce vibration for faster, quieter cutting