Usage Tips:Face milling cutter 4 flutes planer cutter wood for router 51mm shaft 8mm yellow High Quality: The sharp carbide bit is made of solid hardened steel with an anti-kickback design. Precise cutting reduces debris and burrs. High-precision grinding technology, stable and efficient. Precision Size: 8mm shank cutter for spoilboard surfaces, 51mm cutting diameter, 12.7mm cutting height. Practical: 4 wings make a quick and clean cut on your project material, ideal for projects of any complexity. Multifunctional: This professional floor cleaning cutter is not only perfect for smoothing, threading or planing the surface of the spoiler board, but also for trimming and slotting/grooving. Widely Applications: Suitable for solid wood, MDF, laminate, chipboard, compact plywood, acrylic, etc. Avoid cutting metal and non-wood materials. Features： Design: Use it to rebuild or plan the surface of the spoilboard. Practical: 4 wings make a quick and clean cut on your project material, ideal for projects of any complexity. Application: Suitable for wood, chipboard such as steel, sand, MDF, compact plywood. 4 blades ensure a quick and clean cut of your project material, ideal for projects of any complexity. Designed for desktop engraving machines (such as CNC handheld and table routers), it cannot be used in electric drills and drills. Specifications： Material: Durable Carbide, Carbon Steel Shaft: 8mm Cutting diameter: 51mm Cutting length: 12.7 mm Scope of delivery: 1 x Spoilboard Router Bits