combo pack 1/8-27 national pipe thread tap with 21/64" drill bit. precision cut threads, accurately formed for consistent, exact threading. heat treated and tempered for file hard threads, and longer, useful life. designed for hand cutting applications. national pipe thread tap sizes for internal threading on all types of pipes.

• National pipe thread tap sizes for internal threading on all types of pipe
• Heat treated and tempered for file hard threads and longer useful life
• Designed for hand cutting applications
• Combo Pack contains 1 NPT Tap and 1 corresponding drill bit