Carmex Carbide Deep Groove Mill With Internal Coolant Bore - 5mmA precise solid carbide deep groove mill designed for engineers and machinists who need accurate grooves and long reach cutting in metal parts. This 5 mm cutter features an internal coolant bore, 6 spiral flutes, and a rugged carbide body to deliver consistent performance through deep slotting and deep hole grooving up to 130 mm. Cutting Diameter: 5 mm cutting diameter for precise, compact grooves Depth Capability: Deep groove milling up to 130 mm in