The Kennametal Coolant Thru Steel Boring Bar with a 1.5" Shank and 12” long (D-5424W) is a high-quality toolholding product manufactured in the United States by Kennametal. Designed for precision boring applications, this adapter features a coolant-through design for efficient cooling and lubrication. With the brand's reputation for producing reliable and durable toolholding solutions, this boring bar is a valuable addition to any metalworking or CNC machining operation.