Review on Irwin Tools 9739 10mm 1.25 Inch by Ryan Nguyen

I need something to clean the 8-year-old cat thread on my Acura TL. A bolt broke off when removing and I didn't want a repeat of having to remove them again. This matrix worked great for removing surface rust and restoring threads. I've paired it with a 3 piece Irwin tap set to thread factory nuts and now they work together in perfect harmony. The last picture shows the bottom 3 studs after using a die and light wire brushing, they look brand new. The nuts would be spinning freely now were it not for a fresh anti-seize layer.