Freud 400mm Medium to Thick Aluminum & Non Ferrous Blades with Mechanical Clamping Arbor: 30mm, Teeth: 96 DBC Drywall Bridging Connector promotes straighter bores promotes straighter bores Zinc plated finish for added durability the zinc plating over carbon steel provides a layer of corrosion resistance that helps the anchor hold up in typical interior construction conditions over time the coating helps the blade maintain cutting performance longer between cleanings and reduces the risk of heat related damage to workpieces or the blade itself Purpose built for medium to thick non ferrous cutting specifically rated for solid drawn products with a thickness of 2 to 10 mm