The 0.4350 Chk Reamer ST FL SS HS is a high-speed steel reamer designed for precision hole finishing. With a diameter of 0.4350 inches, this straight flute reamer is ideal for enlarging and smoothing holes in various materials, including stainless steel. Its high-speed steel construction ensures durability and longevity, making it suitable for both industrial and DIY applications. The reamer's design allows for efficient chip removal, providing a clean finish. A must-have tool for machinists and engineers seeking accuracy in their work.