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I have two of these Link-Tech 12V tools, new in the cases, sample tools. I charged them and they work fine.
Made in China, website linktechj.com
In addition to the 4 pex sizes it also has a head for the cinch type clamps.
$135.00 each and I'll include shipping in US
Bob "hot rod" Rohr
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me