Build a precision bicycle wheel truing stand for less than fifty bucks

Step 4 Optional: remove o-rings

It is not necessary to remove the rubber o-rings with the bolt size I have listed, but if you want to - or if you need to use a larger bolt than I have suggested - just use a small screwdriver or other tool to push out the brass insert that holds them. You will need to push pretty hard, and you will need to put the brass insert back in before moving on!