Barry, you should put your link in a tiny url link. It's so long it overruns the page...makes the post reply button hard to find. Maybe you could ask Dave or Brad to do it if you don't know the procedure.
Anyway, these spacers are rather beefy, unlike many of the stand offs etc. They measure 3/16 o.d. x 9/16 L with app. the hole size that fits a .109 rod...an 1/8 rod won't go through it.
The wall thickness is app .035...pretty thick.
I thought I had a few of these but can only find the one I took measurements from.
There's a guy on ebay selling Derby parts...might hit him directly to see if he has other parts.
Barry Coker wrote:These are listed under electronic standoffs on Ebay they have aluminum brass and nylon some have threads that may need to be drilled out.
Word of caution using thin walled spacers, even the original ones have been known to mushroom out and hang up the rod on the threads. It's happened to me more than once on the Derby I once owned. Just be aware.