The Eagle 70 Transmission derailleur is the bedrock of the best cable-actuated Transmission shift experience. It features an all-new T-Type cable actuation ratio to provide the most precise and crisp shifts every time. Utilizing the same Full Mount design as its electronic siblings, the Eagle 70 Transmission derailleur brings strength and dependability to any bike. The derailleur body features replaceable skid plates like GX, X0 and 90 and shares many of the same rebuildable qualities of those high-end derailleurs. Eagle 70 T-Type Rear Derailleur Features: Revolutionary Hangerless interface and Full Mount attachment method creates a far stronger connection because it grips both sides of the frame (Requires frame with UDH interface) Robust T-Type compatible mechanical rear derailleur Steel cage adds durability Specs: Rear Speeds: 12-Speed Cable Pull Ratio: T-Type Actuation Max Tooth: 52t Cage Material: Steel Drive Config: 1x Shift Technology: T-Type Actuation Chain Technology: T-Type Weight: 406 Grams Compatibility: SRAM's Eagle 70 Transmission Rear Derailleur is compatible with all T-Type Transmission components. Eagle 70 is compatible with any frame that fulfills the “UDH Specification” featuring a hanger-less interface can be upgraded. The SRAM UDH Bike Finder lists all UDH bikes that are compatible with Eagle 90.