3/8" Diam, 5/16" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore MPN:10385

With a diameters of 3/8 inch, a shank of 5/16 inch, three flutes, straight shape and interchangeable pilot system, this counterbore bit is perfect for precision drilling and countersinking operations in materials like steel and aluminum commonly used in machining applications. The durable carbide construction delivers long-lasting performance with high accuracy while its versatile design allows users to work efficiently on various projects in automotive repair shops, aerospace manufacturing or other industrial settings where precision is paramount. From creating clean holes for fastening bolts to providing smooth surfaces when assembling multiple components, this counterbore bit proves indispensable for expert mechanics and DIYers alike who require reliable performance on challenging jobs every day.