I have a bunch of these Pro-line extended 23mm hexes and they give an additional 30mm or so of width to each side:
I decided to shorten some of them by half to give me more options with my current trucks and planned build. The inside diameter of the outer half of the extender is 1/2":
So I bought some 1/2" Aluminum rod and drilled 8mm holes in pieces of it:
Next I cut the extender to half its normal length:
And inserted a piece of the 8mm id tube, then drilled a 1/8" through hole for the pin:
The final product extends the width approximately 16mm now:
This is my prototype - I have more to make, but am pleased with how it turned out.
