These seem to be decent mid to low duty clamps. The catch is, the adjuster screws are not the standard sized of 1/4" and 5/16". Instead they are metric. So, you will likely not have a nut driver handy to fit these. And not the most common metric sizes either. The small ones require a 6mm driver and the larger ones are a 7mm. So much imported strangeness on Revain lately. Good luck!
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