Blackspire einfachx chainguide e type direct mountwhen you are using a blackspire product you are not riding with a low grade component so when you make the long drop or even a short one you have the confidence that your equipment will not fail their raw materials are aircraft standard which is of the highest quality cncd 6061 t 6 guide frame lightweight molded thermoplastic component german engineered in canada captive hardware adjustable for 49 5mm 50 5mm chainlines fits 32t 42t