magic loop knitting? I have a feeling that fixed circs are best for this, but thought I’d ask. Thanks in advance!
all the time! They are my favorite needles for magic looping sweater sleeves 
The short time I tried it that was what I used.
Yes, it is what I am using now…the 32s work great and 40s would probably even be better depending on what you are doing with them - for sure with two socks on two needles but if you are done one at a time, then the 32s are good. I LOVE Magic Loop and LOVE KP Options - I should clarify that I am using the Harmonies as I don’t have the nickel plated but the interchangeables work just fine. 
Oh Yes!!! I have the KP nickle plated interchangables and like them alot!
I am actually making sock Magic loop (ML) with the 32" but I’m going to order the 40" and 47’ for doing 2 socks at the same time ML.
Yep, and they worked great for me! I used the 36" length (I think? The longer one that comes with the set anyway) and it was just fine
Yes!!!
I use my interchangeable (nickel plated) for magic loop knitting all the time.
Hey, here’s a question. Are the cords interchangeable between the nickel plated and Options? I’d like to try the Harmonies, and was wondering if I Could just buy a set of the tips to try them.
Yep, totally interchangeable. I’ve got the Harmony set and then 2 pairs of Options tips.
Actually, I prefer them as when I made socks, the thinner cables help prevent laddering.
Oooooh, aaaaaaah.