There are 3 Sizes of Each Tap: Taper, Plug and Bottoming.
Bluespot 32pc Metric Tap and Die Set M3 M4 M5 M6 M8 M10 M12 Steel Thread Cutter
BLUESPOT Metric Tap And Die Set 32pc M3 M4 M5 M6 M8 M10 M12 Taper Plug Set
LASER 4554 110pc Metric Tap and Die Set With Adjustable Tap and Die Holders
US PRO Metric Tap And Die Set 40pc M3 - M12 Tap & Die & Taper Plug Set 2620
US PRO Tap And Die Set UNC / UNF 1/4" 5/16" 3/8" 7/16" 1/2" Tap Wrench Die Set