Bolt spacers

I have the bolt, but spacers have never been snug between mount ears,so I would like a bulk length for proper fit.
I couldn't maneuver Google to get suppliers or decent results.
Thanks all!
I'll get in touch with local machine shop and metal companies.

I went to a local steel company and bought the metal for fabricating my cross member and also some tube steel to strengthen the area the bolts went through. It was cheap and I just cut it to fit.

...or call some machine shops in the area. They always end up with racks of unused material.

1 & 2 ft on goldbay… …….
Steel Tubing /Spacer/Sleeve 5/8" OD X 3/8" ID X 12" Long 1 Pc DOM CRS | eBay

Steel Tubing /Spacer/Sleeve 5/8" OD X 3/8" ID X 24" Long 1 Pc DOM CRS | eBay

You should have started a want ad. You want them don't you? Do you have the bolt?