A boring bar tool is used in machining to enlarge or finish holes with precision, ensuring accuracy, smoothness, and efficiency in manufacturing processes. What Is a Boring Bar Tool? A Boring Bar Tool is used to make a hole bigger or to improve a hole that is already made. Instead of creating a new hole, it changes the size, shape, and finish of the old one. The bar is fixed on a la... https://www.jaibros.com/products/carbide-profiling-and-boring-mqr-tiny-tool?_pos=1&_psq=borimg+bar+tool%27&_ss=e&_v=1.0