THE MOST COMPLETE TOOL SET FOR THE JOB: It comes with a tongue bit, a 1/2'' groove bit, and a 45° lock miter bit. MANY USES FOR UNLOCKING: Use these tongue tools and router bits to improve your hardwood working performance and create beautiful handmade furniture yourself. Ideal for kitchen and bathroom doors, office cabinets, floor tables, bedroom shelves, exterior frames, walls, and more. DURABLE STEEL BODY - RELIABLE CRAFTSMANSHIP: The unique design, durability, and impact resistance ensure blade sharpness, your first choice for quality. Hardened steel body with anti-kickback. Heat-resistant and construction-resistant Teflon coating. EXTREMELY VERSATILE WORKING TOOLS: This slotting and grooving cutter set is truly versatile for added convenience. Suitable for wood, MDF, chipboard, plywood compact panel; Please avoid cutting ferrous metals and other materials such as steel, iron, sand, etc.