Widin Carbide Drill Through Coolant 3xD AlTiN Coated - 15.7mmThese drills feature a solid carbide construction that provides high durability and long tool life, ensuring consistent and reliable performance. The AlTiN coating enhances the drill's performance by offering excellent wear resistance, high hardness, and low friction, resulting in improved tool life and increased productivity. With the added benefit of through coolant capability, these drills ensure efficient chip evacuation and effective cooling