Precision Cut Connections: Razor-sharp edges ensure leak-proof threads on pipes/fittings. Eliminates rework and material waste. 3Pcs Pipe Threader Size: 1/2″, 3/4″, and 1″ sizes, 1/4″ hex shank. Dual-Function Pipe Threading Tool: Prepare both internal and external threads effortlessly with a single tool, no need to switch(Note: If you want to connect a male and female thread, you need two pipes of different specifications!).