This Litton Union Twist Drill tap is a high-quality tool perfect for your metalworking needs. With a tap thread size of 5/16 in - 24 and a unit quantity of 1, this spiral point tap is designed to provide you with a reliable and efficient performance. Made in the United States, this tap is a top-of-the-line choice for your metalworking supplies. Its brand, Litton Union Twist Drill, is known for producing exceptional quality and durability. This unit type tap is perfect for those who need a reliable and efficient tool for their metalworking projects.