The new NX Eagle™ 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. Features - NX Eagle 12-speed Rear Derailleur Completely new rear derailleur incorporating Sram´s proven X-HORIZON™ design and new Type-3 ROLLER BEARING CLUTCH™ technology Eagle™ ecosystem-engineered mounting system and CAGE LOCK™ positioning add robustness Eagle™ pulley technology provides greater efficiency, crisper shifting and quieter operation Product features Use: MTB Group: NX Eagle Gears: 1 x 12 Cage: long Cage Max. tooth: 50T Technology Highlights: X-ACTUATION™, X-HORIZON™ Bearing: Type 3 Material Outer Cage: Steel Inner Cage: Steel Pulleys: Steel Color black