O-Chain R for Sram 3-bolt cranks

NEW. fresh out of the box. Never been ridden. Never been mounted.

O-Chain R:
Raw
Modes can be changed from 12 to 9 to 6 to 4 degrees or locked without tools on the bike
Sram 3-bolt cranks or cranks with sram 3-bolt interface
104mm BCD

Made in Italy