The Irwin 1789225 High Speed Steel Round Shank Left Hand Drill Bit is a durable and high-quality power tool accessory perfect for various drilling tasks. Made of High Speed Steel, this drill bit provides excellent performance and long-lasting durability. The left-hand design allows for easier bit changes, while the compact size of 5/16x5-7/8 inches makes it versatile for a range of projects. Crafted by IRWIN, a trusted brand in the industry, this drill bit is a reliable choice for both professionals and hobbyists alike.

Left hand thread