I know this must have been answered 20 times before, but does anyone know where to get good quality D-rings (of the caliber that Tony Miller might use)?
Tandy makes a very slightly thinner version than I use now but I did use theirs for years. I buy mine from Amish harness maker friends. eBay could turn up something decent I am sure or Weaver or Springfield Leather.
Buckleguy carries a huge range of solid brass rings, such as D-rings and O-rings. These are commonly used as leather bag rings, purse rings, and handbag rings.