Affordable Router Bits: This router bit set includes 7 different size router bits to meet basic woodworking grooving needs. Product Material: The router bits are made of YG8 carbide alloy and 45# carbon steel. The YG8 carbide alloy is suitable for rough machining of wood products at low speeds. Applicable Material: Straight router bits are designed for slotting and cutting wood. Suitable for composite materials, plywood, and soft woods. Not suitable for hard woods such as oak, camphor wood, or birch. Heat Resistant: The heat-resistant green coating helps prevent the build-up of sawdust, resin, and pitch, improving work efficiency. Features: Blade material: YG8 carbide Body material: 45# carbon steel Rod diameter: 6mm round shank Cutting diameter: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm Color: As shown in picture Note: Measurements are manually taken; please allow 1-3 cm error. Due to lighting and screen differences, slight color variations may occur. Actual product takes precedence.