microSHIFT ADVENT RD-M619M-B Rear Derailleur - 9-Speed Medium Cage Black ModelNumber=1049 which comes with the mask

which comes with the mask and one each of Racing Filters 1

Also fits SRAM Force and Red

tire pressure and tread

5 Height (ins) 6

microSHIFT ADVENT RD-M619M-B Rear Derailleur - 9-Speed Medium Cage Black ModelNumber=1049 which comes with the maskDesigned with real life riders in mind the ADVENT rear derailleur packs trail ready features into the most attainable wide range drivetrain on the market. The derailleur kinematics are also precisely tuned to use a more direct cable path making the shifting response consistent across all gears. Rear Der Shifter Compatibility microSHIFT ADVENT Rear Derailleur Mount Type 10x1 Standard Drivetrain Speeds 9 Chain Wrap Capacity (teeth) 37 Cage Length Medium