If you're looking for a way to make your rear triangle / chain more adjustable, then a halflink chain is for you.

Material: steel, cromized treatement
Size: 1/2" x 1/8"
Colors: black, gold, cyan, white and purple.
Specials: hardened pins
halflink chain

Weight: 504g (17.78oz, 1.11lbs) (100 links)

NOTE: 2 euro extra for coloured finish