Powerbuilt 640811 14 mm Filettatura Back-Tap attrezzo di Riparazione

Best tool everDon’t think twice to buy itIt did what it was meant to do

It help my to rethread spark plug dameged thread on my Toyota prado

Excellent bit of kit reasonably priced and works like a dream

Iused i to rethred my MDT mower sucsessfully!Easy and swifth.

Worked like a charm and saved me a few hundred dollars, I cross threaded the first few threads when I tried to to use a thread restorer Because of the restricted hole location, my mechanic wanted to remove the manifold to re re-tap the hole properly.To make sure the tap started straight, I inserted a wooden dowel in the hole and noted the dowel's orientation and then I started the tap as close to this position as possible. So as not to start the tap cross threaded, I inserted the tap so that it's top thread was a few threads below the top and slowly expanded it while gently rocking. It was obvious when the tap engaged properly. I expanded the tap and turned it back and forth. I repeated this, expanding the tap a little at at a time on each try until I needed pliers to expand any further. Then I ran the tap out. After that the oxygen sensor was easy to install.