Hi-Performance. 
Double X Bridge Shape for fast and smooth shifting. 
Mushroomed Riveting. 
Inner and Outer Plate Chamfering for smooth operation.
Non-Directional. 
Extra Stretch Proof Pins. 
Strongest chain connection in the industry today
126 links.
SKU BCP-X12AU
Model # X12AU
Barcode # 4715575884639
Brand KMC Chains