This tool set includes 4 pcs of standard plug cutter and 4 pcs of 4-tooth countersunk cutter. The countersink cutter creates tapered plugs to fill countersunk holes. p> Using standard cutters helps eliminate wood defects. 8-piece cork cutter set makes perfect corks for countersinking holes. This set of milling cutter achieves excellent finish when using the same wood species. Note: The data are all measured manually, please allow 1-3cm error due to difference in light and display, there may be color differences, please refer to the actual item received.