Unique design, durability, and shock resistance ensure the blade's sharpness, your number one choice for quality. Hardened steel body with anti-kickback protection. Teflon coating for heat and construction resistance. High-quality YG6 alloy for a sharper, longer-lasting edge, precision-machined carbide for clean, accurate cutting and grooving for all wood species. This router bit set is truly versatile for added convenience. Suitable for wood, MDF, particleboard, compact plywood; Please avoid cutting ferrous metals and other materials such as steel, iron, sand, etc.