Precision Size 8mm Shank CNC Spoilboard Surfacing Router Bit, 51mm cutting diameter, 12.7mm cutting height. Made of microcrystalline carbide inserts and solid hardened steel body for superior wear resistance and sharp cutting edges. High-precision grinding technology ensures stable and efficient performance. Anti-backlash design reduces vibration and improves cut accuracy. Features 4 cutting edges for fast, clean material removal. Ideal for surfacing spoilboards, creating a flat reference surface perpendicular to the router motor, and general trimming, slotting, and grooving tasks. Suitable for flattening live edge boards too large for a planer. Effective for projects of any complexity level. Designed for use with solid wood, particle board, plywood, MDF, and other wood composites. Do not use on ferrous metals or non-wood materials such as steel, iron, or abrasive materials. Compatible with CNC machines, automatic routers, handheld routers, and table-mounted portable routers. Also suitable for wood engraving and trimming equipment. Specifications: - Cutting Diameter: 51mm - Cutting Height: 12.7mm - Overall Length: 64mm - Shank Diameter: 8mm - Cutter Head Material: YG6 alloy - Cutter Body Material: 45# carbon steel, surface sputtered - Weight: 105 grams - Quantity: 1 piece - Color: Yellow, Silver Safety Instructions: 1. For industrial cutting and engraving use only. 2. Store in a protective case when not in use. 3. Use only on recommended materials: hardwoods, particle board, MDF, plywood, compact panels, and acrylic. Avoid ferrous metals and non-wood materials. 4. Always wear appropriate personal protective equipment during operation.