Insert solid carbide spoilboard plunging, surfacing, planing, flycutting & slab leveler CNC router bit great for cutting large surface areas and surface planing. Higher number of teeth allows for higher feed rate. These industrial router bits feature solid carbide insert knives with four cutting edges that allow users to rotate the knife when one side becomes dull providing the highest-quality finish available on woodworking tools.Perfect for:Resurfacing spoilboards using CNCPlaning large glued up panels using CNCSurfacing and finishing wood using timber slab machinesAlso suitable for router sled machines, Make sure that your router sled is fully stable and squaredRabbeting or slottingDesigned for planing & chamfering the following materials:MDF FiberboardHDF/LDFHigh Density Urethane (HDU Board)Balsa Core*Solidwood/Softwood*Plywood/Chipboard*Plastic/Acrylic**Ultra-High-Molecular-Weight Polyethylene (UHMWPE)*For optimal results and maximum insert life, replace inserts with optional general purpose knives #RCK-457 (sold separately). Note: for item #'s RC-2255, RC-2259 and RC-2263 only.**Use lower CNC spindle RPM and adjusted feed-rate to prevent Melting and adhesion of the acrylic material to the tool.Featuring:Unique chamfer corner insert design, creates flawless surfaceCapable of removing very thin layers of material, less than 0.001" per passTool can plunge up to a maximum depth of 6mm (1/4"), then start resurfacing3 or 5-wing design, resulting in a more balanced tool while running4-sided solid carbide insert knivesExclusive carbide grade for highest quality of cutMaximum cutting efficiencyFaster material removal process#RC-2255 Max RPM = 18,000#RC-2259 Max RPM = 12,000#RC-2261 Max RPM = 18,000#RC-2263 Max RPM = 18,000#RC-2265 Max RPM = 18,000#RC-2267 Max RPM = 22,000Warning: Proper torques rating to tighten down screws is 2-3Nm Torques.