Guhring 16643964 Solid Carbide Drill Back C Bore 12.4mm

Guhring 16643964 is a solid carbide drill with a 12.4 mm diameter and a Back C Bore configuration. Made by Guhring, this tool uses solid carbide construction to deliver high rigidity and wear resistance for precise hole-making in challenging machining tasks. The Back C Bore design noted in the part name indicates a specific bore geometry intended to support hole quality and reliable chip evacuation in typical drilling or milling operations. The 16643964 model designation identifies the exact tool, enabling correct matching with compatible holders, collets, and machine setups in CNC, milling, or drill-press workflows that require carbide performance. This drill is intended for applications where a carbide drill is preferred for stability, dimensional control, and long tool life, helping maintain consistent bore quality across production runs. For best results, follow standard carbide drilling practices with appropriate speeds and feeds given the workpiece material and machine capabilities.