Carmex Carbide Groove Mill With Internal Coolant - 12mm x 1.5mmEngineered for precision grooving, the Carmex Carbide Groove Mill with Internal Coolant delivers clean, accurate grooves across a variety of materials, backed by durable carbide construction and smart cooling. Size: 12 mm x 1. 5 mm Material: Solid carbide for exceptional strength, wear resistance, and long tool life Internal coolant: Coolant delivered through the flutes for efficient cooling and chip evacuation Flute configuration: 35 spiral flutes