An endlink is the piece at each end of a bracelet that sits between the lugs of the case. It works best when it fits snugly. Its build changes how a bracelet feels: solid endlinks add weight and rattle less than hollow ones on vintage bracelets, and they let less dirt reach the pins.
What styles of end link are there?
End links come in two main styles, known as male and female. Whichever style a bracelet uses, the end link works best when it sits snugly between the lugs of the case, with no loose gap at either side. The current Omega Speedmaster Moonwatch uses short female end links. An end link that does not fit closely is a poor match, whatever its style.
What is the difference between solid and hollow end links?
For a long time, end links were simply pieces of sheet steel folded into shape. Solid end links, or SEL, change how a bracelet feels on the wrist. They make it heavier, and it rattles less than a vintage bracelet with hollow end links, or HEL. They also let less dirt and grit reach the pins that hold the links together. Solid is not always literal. The solid end link on the Rolex 16610 bracelet is reinforced, but it is still largely hollow inside.
What does SEL mean on a Rolex?
The term SEL is used mostly for Rolex, and for the different bracelets the brand has used over the years. Rolex bracelet construction has gone through four generations. The last is the fully solid bracelet with solid end links, which followed bracelets with hollow end links. Fully solid bracelets with solid end links became standard at about the year 2000. SEL and HEL are shorthand for where a Rolex bracelet sits in that sequence.
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