Extra watch band link for 18k/SS Rolex oyster band (comes on Submariner, Datejust, and GMT Master models with 6-digit model numbers). Solid high-polished 18k gold center. Made in Italy.
 
Attention - this is not a standard cheap aftermarket link you might find on eBay, it is a high quality Italian made replacement - by far the best aftermarket links available on the market today.