The RedLine Tools 1/2 4 Flute Carbide Corner Radius End Mill is a precision cutting tool designed for demanding machining applications. This American-made end mill features a 0.5-inch cutting diameter with a matching 0.5-inch shank diameter, providing excellent stability during operation. The 4-flute design with variable helix and variable index geometry helps reduce chatter and harmonics, delivering superior surface finishes and extended tool life. The corner radius of 0.3 inches allows for stronger cutting edges compared to sharp corner end mills, making it ideal for high-performance milling operations. Constructed from premium carbide material and finished with AlTiSN coating, this end mill offers exceptional wear resistance and heat dissipation. Measuring 4 inches in length with a 1.75-inch width and weighing just 10 grams, this tool combines durability with precision. The round shape and corner radius end cut type make it versatile for various machining tasks, from roughing to finishing operations. Model number REP4169 is suitable for professionals seeking reliable performance in metalworking applications.