TCT blades, or tungsten carbide-tipped blades, are used for cutting a variety of materials, including wood, plastic:WoodworkingTCT blades are a staple for both professionals and DIY enthusiasts, and are ideal for making precise cuts in hardwood, softwood, plywood, and MDF.TCT blades are favored by professionals because they are accurate, precise, and can cut quickly and safely. They are also re-sharpenable and have a long life.