Material: Carbide T type woodworking knife with high hardness, wear resistance, corrosion resistance, support more stable and smooth cutting. Application: T slot router bit is ideal for precise cutting and grooving of items such as shelves and cabinets. Usage: T slot router bit can cut to process solid wood, hardwood, cork, MDF, particle board, plywood and other composite materials. Avoid cutting black metal and non-wood materials to avoid tool breakage.