The Triumph Twist Drill Co. Bottom Tap sized at 9/16-18 is expertly crafted from high-quality carbon steel ensuring durability and precision in every use. Designed in a bottom style this tap is perfect for creating clean accurate threads all the way to the bottom of a hole. Its robust construction makes it ideal for both professional machinists and DIY enthusiasts looking for reliable performance in threading applications. Whether you're working on metal or similar materials this bottom tap offers consistent results making it an essential tool in your workshop.