This is my favorite bit!
The following description is from the Drafttack.com website. What a deal SW-3997
Loose Ring with oval link and Cuprium Mouth
This bits is made of the world's finest 18-8 (chromium/nickel) stainless steel. An alloy that is best for bits because it extremely strong. It also resists salt and acids in saliva, and will never rust or spot. Loose Ring Snaffle with oval link and Cuprium Mouth Sizes: 5", 5 1/4", 5 1/2", 6", 6 1/2", 7"