Neiko Professional-Grade 40-Piece High-Strength Steel Alloy Tap & Die Hexagon Set - Metric - M3 to M12
A must-have tool set for tradesmen and serious do-it-yourselfers, this complete set allows you to cut threads and bore taps quickly and easily with professional results. 17-piece tap and 17-piece die by size/thread-pitch: M3 x 0.5 and 0.6, M4 x 0.7 and 0.75, M5 x 0.8 and 0.9, M6 x 0.75 and 1.0, M7 x 0.75 and 1.0, M8 x 1.0 and 1.25, M10 x 1.25, M12 x 1.5 and 1.75, plus 1/8" NPT-27TPI Note: Metric threads are typically designated by thread pitch (thread-to-thread distance in millimeters) rather than threads-per-inch (TPI) used for SAE.