[0cVlTeIATBs]

It is great, but one annoyance is it's pretty easy to buy a small threaded coupler with one side blank instead of threaded like the other side--uncommonly needed parts like this will show up in my searches higher than the more common variant, and it takes careful reading of the specs to differentiate.

I like how rockauto puts heart symbols next to the commonly purchased parts.

[0cVlTeIATBs]

Correction, not higher in my searches. But when browsing the table-like listing of all 1/2" NPT SS adapters, for instance, I have found it easy to accidentally buy a 1/2"-blank part instead of 1/2"-1/2"