Carmex Carbide Groove Mill With Internal Coolant - 6mm x 1.5mmThe Carmex Carbide Groove Mill with Internal Coolant is a precision grooving tool designed for engineers and machinists who need clean, accurate grooves in a variety of materials. Built from solid carbide, it delivers rigidity and long tool life, while the integrated internal cooling system keeps heat in check for consistent performance. Size: 6 mm cutting diameter with a 1. 5 mm groove width for precise, small diameter grooving. Material: Solid