The IRWIN 66716 1/4 Extended HSS Straight Shank Fractional Drill Bit is a reliable tool designed for aircraft drilling applications. Made of high-speed steel, this drill bit has a 1/4 inch diameter and a 6-inch length, providing extended reach for various drilling tasks. The straight shank ensures stability during drilling, making it a versatile and essential tool for professionals and DIY enthusiasts alike.





