Review on Nicholson Thread Repair Single Square by Mark Bearden

accidentally twisted threads on the boiler feed pump. There is no tap or die on offer for screwing onto the pump body or cover. But the streams were 16 tpi and this set of stream files was just what I needed. It took about 3 minutes to fix broken threads (of which 2 minutes went to desktop and back). I put the connector in the pump body and it spun like clockwork. I used to have thread files but this is the best I've seen for the money. It covers a wide range of thread pitches (even pipe threads). If mechanical things are your thing, do yourself a favor and get this set. You will need it at some point and will be glad you have it when the time comes.