Carmex Carbide Groove Mill With Internal Coolant - 6mm x 1.00mmThe Carmex Carbide Groove Mill With Internal Coolant is a precision solid carbide tool built for accurate internal and external grooving across a variety of materials. Designed for machinists and shops that demand clean grooves, reliable performance, and longer tool life. Diameter x Groove Width: 6 mm diameter with a 1. 00 mm groove width for precise, narrow groove applications. Material: Solid carbide construction delivers exceptional rigidity, wear