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There is nothing LOK about these tuners. I will say they are better tuners that cheaper ones. I bought these thinking they're locking tuners. NOT. The ad can be misleading to think LOK tech is a locking tuner.
This isn’t a review of the product so much as the vendor. The product is fine, except that receive five of the EZ Lok machines and 1 standard tuning machine. Might just be a one off thing, but still it irritating. Now have to wait to get matching tuning machines holding up the whole process