I apologize, not sure what happened, I went back through every email with the word "hollow shaft" in it since August 20th and there were not unanswered emails about the shafts, but here's the scoop.
We have 15 different hollow shafts. They are designed for the standard sticks carried in our store and offer a variety of RGB and single LED options.
I can not validate the shafts will work with other vendors custom sticks. We are still in the process of creating our own 2/4/8 way switching sticks. We will have a full light up selection for these sticks when they are finished. If someone wants to measure the shafts on a custom sticks and send us the dims we can tell you if our shafts will fit.
PM me your email and I can do a search specifically for your email.
We have or will have the following (6mm threading is japanese standard, 10mm is for our custom ball tops and RGB ball tops, longs are all 3/4 inch longer than standard):
JLF 6mm threading
JLF Long 6mm threading
JLF 10mm
JLF Long 10mm
Seimitsu (also work for Zippyy) 6mm
Seimitsu Long (also work for Zippyy) 6mm
Seimitsu (also work for Zippyy) 10mm
Seimitsu Long(also work for Zippyy) 10mm
JLW 6mm
JLW 10mm
JLW 10mm shorty
Mag Stik 10mm
IL/Happ Skinny shaft 6mm
IL/Happ Skinny shaft 10mm
IL/Happ Standard shaft 10mm
We are also getting ready to release our custom LED joysticks with RGB tops prebuilt.