SHALL 1/2" Shank Spoilboard Surfacing Router Bits, 2-1/2" Cutting Diameter CNC Slab Flattening Bits with 4 Indexable Inserts, replacement blades，Heavy Duty Wood Planer Bit

[Shantleneck Diameter and Size]: 1/2” shank diameter, 2-1/2” (63.5mm) cutting diameter. Blade length = 12mm*12mm. Total 8 blades, 4 installed, 4 spare blades. [Easy Blade Replacement] All blades have 4 cutting edges, allowing for easy replacement when they become dull. A matching screwdriver is included for convenient blade replacement, and 4 spare screws are also provided. [Precision Planing] This 2-1/2" (63.5mm) cutting diameter cutter head easily planes perfectly smooth work surfaces without vibration. Its highly concentric design makes it ideal for smoothing uneven natural edges or worktable surfaces. [Extreme Durability]: The carbide construction ensures durability and extends tool life. All inserts have four cutting edges that can be rotated for different orientations. [Versatile Applications]: Whether you're using a CNC milling machine, automatic planer, or handheld planer, this cutter head can meet your needs. It's ideal for various hardwoods/softwoods such as laminate, balsa wood, high-density polyurethane (HDU) board, and acrylic sheets.