Century Drill & Tool (1 pc) High Carbon Steel Metric Plug Tap, 14.0 x 1.25 SP, High Carbon Alloy Use with 37/64" Drill. Heat treated and tempered high-carbon steel tap. Precision cut internal threads, accurately formed for consistent, exact threading. 1-1/4-11 1/2 NPT. Design for hand cutting applications. (95207)