Built for strength and stability, SCT’s 3/8" Diamond Insert Indexable Bars with coolant holes are ideal for heavier boring applications requiring internal chip evacuation. Each bar combines a robust micro grain carbide shank with a heat-treated steel head to reduce deflection and maintain accuracy. Coolant holes extend tool life by minimizing heat and optimizing chip flow. Every bar includes one insert screw and one Torx key. Inserts are sold separately. Options with or without flats are available to fit a range of tooling setups.