Charles Butler photo

Charles B. Butler

1 Level

1330 Review

58 Karma

Review on Thread Kits 3221 M12F Repair Kit by Charles Butler

August 24, 2022

Drilled and tapped an aluminum head like I did.

Drilled and tapped as I have done dozens of times but this was my first time with this brand. This will be the last time I try to insert inserts into the insert tool by pulling them out. I have never had as many problems as I have with this brand and have been doing this for over 30 years.

Pros

GOLS certified

Cons

Only available in black

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