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Introducing our Extension Tap, designed for versatile tapping needs in various materials. This high-speed steel tap provides excellent wear resistance and a smooth, polished finish. Its UNC thread standard ensures compatibility with a wide range of applications, while the bright (uncoated) finish adds to its durability. The 5/16"-18 thread size is ideal for various projects. This tapping tool is perfect for machinists, hobbyists, and professionals seeking precision and quality in their work. Use it for general purpose tapping applications, and experience the ease of use with our Extension Tap. Order now and get your hands on a reliable tap that delivers unmatched performance!