About This Precision Cut for Accurate Internal Threads: Tap delivers clean, precisely formed threads every time—engineered for accurate threading in metric applications where consistency is critical. Heat Treated for Long-Lasting Performance: Made from high-quality materials that are heat treated and tempered for file-hard durability, offering extended tool life and resistance to wear under repeated use. Optimized for Hand Cutting Applications: Ideal for manual threading jobs, this set is designed for hand use—whether you're working in a shop, garage, or field, no powered equipment required. Includes 3/8"-Size Drill Bit for Compatibility: Comes complete with a 3/8" drill bit, matched to the included metric tap for proper pilot hole sizing and easier threading—no guesswork needed. Convenient Combo for Quick Setup: Packaged together for convenience, this tap and drill combo saves time and ensures you have the right pair on hand for clean, professional-quality results. Overview Material : High Speed Steel (HSS) Shank Type : Straight Brand : Century Drill & Tool Item dimensions L x W x H : 6.75 x 1.75 x 0.5 inches Tool Flute Type : Spiral