SRAM NX Eagle Rear Derailleur - 12 Speed, Long CageThe NX Eagle rear derailleur features the proven SRAM 1x specific X HORIZON design. The larger, 14 tooth X SYNC lower pulley easily facilitates 11 to 50 and 10 to 50 tooth cassette capacity, and also adds to NX Eagle's overall smooth pedaling feel. The Type 3 ROLLER BEARING CLUTCH provides quiet, consistent performance and durability. Mounting system and re positioned Cage Lock offer greater durability Eagle pulley technology provides greater