G&G Omaha
1 -1/2" Series Weld Hub Round Bore With Keyway and Set Screws, 2-1/2 OD
A nice touch from The epoxy resin store is the sample packs for testing before buying.
5/8" Series Weld Hub Round Bore With Keyway and Set Screws, 1 3/4 OD
What stands out to me is how Innovative Composite Technologies keeps the surface smooth and splinter-free.