Description 3-wing Insert router bit for planing and spoilboard surfacing cutter on CNC routers and point to point machines. With upshear for machining composite and solid woods. We highly recommend that the spoilboard cutters are purchased with an HSK Heat Shrink tool holder which provides for best possible finish and tool life. This is also a cost saving factor over time as routine collet replacement is not required and the improved accuracy of a heat shrink chuck will prolong tool life and improve finish. Common names include CNC Surface Planer, Fly cutter, Spoilboard Cutter 6246.100.25 – Mounted in HSK 63 f Heat Shrink
