Reverse Counterbore: 5/16" Dia, 5/32" Pilot Hole, 4 Flutes, Solid Carbide MPN:191-2L

The reverse counterbore is designed to provide a precision-machined hole in the edge of a workpiece, ideal for creating countersinks or relieving stress. Manufactured with a diameter of 5/16 and a pilot hole size of 5/32, this counterbore is constructed from solid carbide, ensuring durability and long-lasting performance. With four flutes designed for fast and efficient cutting, it's ideal for a variety of materials such as aluminum, steel, and titanium. This reverse counterbore is compatible with various drills and is perfect for professional engineers or machinists who require precise results. It is an essential tool in any machining or engineering workshop and delivers consistent, high-quality results.