Century Drill & Tool (1 per pack) Metric Hex Die, 11.0 x 1.50, High Carbon Alloy, Precision Cut Threads. High Carbon Steel: Century Drill & Tool 97614 Metric Hex Die features a high carbon steel construction for durability. Precision Cut Threads: Provides accurately formed threads for consistent, exact threading. Heat Treated and Tempered: For file hard threads and longer useful life, ensuring long-lasting performance. Hand Cutting Applications: Designed for hand cutting applications, offering versatility in usage. Plug Style: The most common style of tap, with 3 to 5 threads chamfered for efficient operation (97616)