Need help finding an ALPS Blue Velvet pot

I'm looking to build a Haller attenuator and need to source a 100K ALPS Blue Velvet. A search on Mouser brings up the following:

RK27112 | Mouser Electronics, Inc.

Can anyone tell me which of them is the "correct" one? FWIW, I'll probably just couple it with a standard 1/4" knob so I'm assuming that a 6mm shaft diameter is correct. If I'm incorrect in this assumption and/or if I'm looking at the wrong part altogether, please let me know. I'd like to order from Mouser so that I can include some RCA jacks, resistors, etc. that I need for other builds.

Thanks in advance for any/all feedback.