Automatic Back Spot Facing Tool gives good performance and reduction in machine time by 50 to 90% as compared to manual tool setting methods. Brisk Tech Engineers offers CNC Milling Head with 90 mm Spindle Diameter. Brisk Tech Engineers also manufactures plano milling heads, milling attachments, polygon turning machines, multi drilling machines, in situ milling and drilling machines, hole deburring and chamfering tools, automatic back spot facing tools and counter boring tools. The Automatic Back Spot Facing Tool has cutting edge which swings in and out depending upon the direction of rotation of the machine spindle. This Tool is provided with HSS [or] standard carbide inserts. This Tool is available for pilot diameter 10mm.