Reverse Counterbore: 1/4" Dia, 3/32" Pilot Hole, 4 Flutes, High Speed Steel MPN:190-1J

This high-speed steel reverse counterbore is designed to create a recess on one side of a workpiece while keeping the other side flush with the original surface. With a diameter of 1/4 and a depth of 5/32, this tool bit offers a precise and clean cut, making it suitable for applications in automotive, aerospace, machinery or any industry that requires precise countersinking operations. The four flutes ensure smooth operation and quick material removal while also preventing heat build-up to reduce wear on the cutting edges. The 3/32 pilot hole ensures accurate centering and stability during use. This counterbore is an excellent choice for creating clean and precise recesses in various materials such as aluminum, steel, brass or plastics.