The reamer with dimensions 0.4219 inches in diameter and 0.3100 inches in diameter, measuring 8-1/4 inches long, is a precision tool used primarily in machining applications. Reamers are designed to refine the size and finish of holes that have been previously drilled, enhancing their accuracy and surface quality. This specific reamer is unbranded, indicating that it may be produced by various manufacturers or may not carry a specific brand identity. As a vital tool in the manufacturing and engineering industries, it plays a crucial role in applications ranging from automotive to aviation, where precision is paramount. Key features of this reamer include its dual diameters, which allow for versatility in hole size adjustments. The length provides sufficient reach for deeper applications, making it suitable for a variety of machining tasks. In summary, this tool is essential for achieving precise hole dimensions, ensuring tight tolerances, and improving the overall finish of machined parts.

Diameter: 0.4219 inches Secondary Diameter: 0.3100 inches Length: 8-1/4 inches Type: Unbranded Reamer