Century Drill & Tool (2 pack combo) 5/16-24 TAP & I Drill CD, High Carbon Alloy, Precision Cut Threads. Includes Plug Style Tap – Most Versatile Option: Features a plug tap, the most commonly used tap style, with 3 to 5 chamfered threads—ideal for starting threads easily while still cutting fully formed threads into a variety of materials. Precision Cut Threads for Consistent Results: Each tap is manufactured with carefully formed, precision-cut threads to ensure clean, exact threading every time—reducing the risk of cross-threading and improving overall performance. Heat Treated and Tempered for Durability: Tap is heat treated and tempered for file-hard thread cutting strength, delivering extended tool life and reliable performance in a wide range of threading applications. Ideal for Hand Cutting Applications: Designed for manual use in general purpose threading jobs—perfect for repair work, hobbyists, maintenance professionals, and DIYers alike. Includes I Size Drill Bit for Complete Pairing: Combo pack includes a properly sized I drill bit, eliminating guesswork and ensuring optimal compatibility for smooth, accurate tapping right out of the package. (94506)