CNC Dust and Chip Extraction Nut SystemTool body in light alloy with wrench.Dust and extractor tool will help evacuate both dust and chips during nesting and conventional CNC routing operations.Easy to assemble directly on the collet chuck instead of the standard nut, also provides a big improvement of dust evacuation, removing it from the work piece directly into the centralized extraction system of the CNC machine.Available in two diameters: 92mm and 98mm.Special surface hardening treatment for longer performance and coating against wear and corrosion, for much better chip evacuation.Suitable for every type of collet chucks (ISO, BT, HSK...) using standard router bits (no adaptors needed!)Maximum tool diameter: ?98 = 70mm and ?92 = 68mm.Optimal gap between dust collection and material is 2mm (0.078"). It works properly up to 10mm (0.393")Maximum speed rotation up to 20,000 RPM.Balanced at G2,5.