
Ordered 1 inch, received 3/4 inch. Aside from being the wrong size, the ad didn't include NPT or straight threads. With all the negative feedback about this coupling not being NPT tapered, I figured I'd get the NPSM we needed. nope We have NPT threads, not NPSM threads. The ad should be edited to indicate which pipe thread it is. The clutch is also made of rough cast metal, unlike the mechanical clutch shown in the photo. Buy Chinese stuff or miss out.

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