I use these sticks in my panel, and I love them!
They are made for metal panels, so if you want to mount them in 3/4" or thicker wood panels, you will have to get out the router!
What I did was route out a square area for the base all the way through the wood, and then routed out a 1/16" deep area on the TOP for the metal plate. Then, I put my control panel overlay over top of that to hide the metal plate & mounting bolts.
FWIW, I have dealt with that eBay seller in the past, and he is very good to deal with...he ships stuff out the day he receives payment. Very quick!
Hope this helps you out!