The M6 X 21 clamp bolt & washer can also be used on the following chainsets:

• Shimano 105 FC-R7100
  - Shimano 105 FC-R7000
  - Shimano 105 FC-5800
  - Shimano Deore XT FC-M8150
  - Shimano Deore XT FC-M8120-B2
  - Shimano Deore XT FC-M8120-1
  - Shimano Deore XT FC-M8100-2
  - Shimano Deore XT FC-M8100-1
  - Shimano FC-M8050
  - Shimano Deore XT FC-M8000-B2
  - Shimano Deore XT FC-M8000-B1
  - Shimano Deore XT FC-M8000-3
  - Shimano Deore XT FC-M785
  - Shimano Deore XT FC-M782
  - Shimano SLX FC-M7130-1
  - Shimano SLX FC-M7120-B2
  - Shimano SLX FC-M7120-1
  - Shimano SLX FC-M7100-2
  - Shimano SLX FC-M7100-1
  - Shimano SLX FC-M7000-B2
  - Shimano SLX FC-M7000-B1
  - Shimano SLX FC-M7000-3
  - Shimano FC-EM900
  - Shimano FC-E8050
  - Shimano FC-MT700-B2
  - Shimano FC-MT700-2
  - Shimano FC-MT610-1
  - Shimano FC-MT600-B2
  - Shimano FC-MT600-2
  - Shimano Deore XT FC-T8000
  - Shimano Deore LX FC-T671

The Black M6 X 19 should fit all the most current 11/12 speed road cranksets. 

Please call the store if you are unsure of which bolt you need.