3 Thread Sizes: Package includes dies for 3 thread maker sizes including 1/2 NPT, 3/4 inch and 1 inch. Threads are standardised to NPT to meet the needs of your work Precise Cutting: Threads are crisp and burr free. The alloy edge stays incisive for a precise cut every time, making it suitable for PVC plastic pipes. Please note that it is not suitable for metal pipes Alloy Material: The mould is made of alloy material, which is hard, wear and reliable, suitable for long term use Suitable for Electric Drill: 1/4 inch shank diameter, suitable for use with various electric drills and lithium drills. Easy to use for both beginners and professionals Efficient: The Pipe Threader Kit can be used with electric drills, which greatly improves the working efficiency, they provide a safe and stable connection, which greatly facilitates your cleaning work Product Name: PVC Thread Maker Tool Kit External Electric Thread Opener size: 9 x 6 cm, Shank diameter: 1/4 in Size: 1/2 in, 3/4 in and 1in Internal Thread Opener (1/2 inch, 3/4 inch) size: 5.2cm, shank 6.35mm Internal Thread Opener (3/4 inch, 1 inch) size: 5.2cm, shank 6.35mm Color: As Shown Material: Metal+Plastic Package Contents: 1 x External Electric Thread Opener 1 x Internal Thread Opener (1/2 inch, 3/4 inch) 1 x Internal Thread Opener (3/4 inch, 1 inch) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.