Check the listing for details. microSHIFT Estes Rear Derailleur 7-9-Speed, Medium Cage, 45t Max Cog, Black. Color: Black, Condition: New. Listed at 23.26 USD. For riders that want worry free shifting, Estes delivers. With robust wide-set pivots, a more rigid body and cage, and high quality metric adjustment hardware, microSHIFT Estes rear derailleurs perform well above expectations.Long cage compatible with 1x chainring and 40-45t max cassette cog / 11-12t min cassette cog. Compatible with 7/8/9 speed cassettes and shifters. MTB cable pull compatible. Metric adjustment hardware for easy setup and maintenance. Construction includes metal inserts for a stiff and responsive linkage. Item Specifications: Largest Cog, 45, Rear Der/Shifter Compatibility, Mountain, Rear Derailleur Mount Type, 10x1 Standard, Drivetrain Speeds, 7, Drivetrain Speeds, 8, Drivetrain Speeds, 9, Chain Wrap Capacity (teeth), 33, Cage Length, Medium, Color,.