Flat Saddle D-Ring Stainless Steel, 1-1/4"

I love the flat saddle D ring! I’m imagining sewing a key chain for my son who would like the weight of this in his pocket. Right now searching to to find large quality circular ring to attach to this for his keys. Any ideas? Yes, I will be ordering more of these flat saddle rings very soon. Also, the design of the ring reminds me of a horseshoe which brings back memories