KMC X12 12 Speed Chain Colour:Black ClickTec™ button interface

ClickTec™ button interface

and can also be found on some disc brake lockrings

Deore BR-M485

The configuration with the stainless steel lace (CS1) and the nylon guides (Form TX) powered by the dial (L6) eliminates stretch

About Shimano Altus BL-MT200 Right Hydraulic Brake Lever

KMC X12 12 Speed Chain Colour:Black ClickTec™ button interfaceAbout KMC X12 12 Speed Chain The KMC X12 Chain is designed for 12 speed bikes, and has 100% compatibility on all leading derailleur systems. For affordable, reliable and smooth shifting, you can't go past the X12! Features 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