hand clamp

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    How Do You Find the NPT Size for a Tractor?

    I have a John Deere 5055E tractor. I want to give this thingy a try but I could not figure out the NPT size. Are they standard? How would I measure it properly? I found some info on the web but it looks like NPT is for threaded designs. Quick coupler is not threaded, as far as I know. I'd...
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