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Find indexable boring tools here in all sizes for a diverse range of applications. A boring bar from Grainger can enlarge holes that have already been drilled. Boring bars can create greater diameter accuracy and also can cut tapered holes. These boring bars feature several types of cutting edges and are designed for industrial use with solid steel shanks and coolant holes. We’ve also go indexable boring bar sets in 3-pc., 4-pc., and 7-pc. configurations for convenient jobsite access to all the tools you need in one place. All this plus Modular boring cartridges and modular boring heads to help you with a variety of jobsite projects. Shop Grainger's high-quality boring bar selection today!Close