Feature 1APPLICABLE MODELS: Suitable for electric wood milling, engraving machine, engraving and milling machine, trimming machine, computer engraving machine, and vertical trimming machine 2HIGH ACCURACY: Possess of sharpness cutting edge, high hardness, accurate positioning, high accuracy, smooth cutting, impact resistance, and high toughness 3APPLICABLE MATERIALS: Can be used for MDF, solid wood, particleboard, plywood, wooden door frames, wooden window frames, cabinets and drawers, etc. 4HIGH HOOK CUT ANGLE: The high hook cut angle allows the tool to cut into the material smoothly, resulting in clean, chip free 5EXCELLENT MATERIAL: Spoilboard surfacing router bit adopt excellent material, hard, sturdy, and durable, can be used for a long time Item Type: Spoilboard Surfacing Router Bit SetMaterial: Main Body: Carbon steel, Bit: AlloySpecification: Shank Diameter: 1/4in shankCutter Head Diameter: 1-19/32inBlade Depth: 1/4in 5/16in 3/8in 1/2in Package List 4 x Spoilboard Surfacing Router Bit4 x Storage Box