SRAM Eagle Rear Derailleur Pulley Kit Description: The SRAM Eagle Rear Derailleur Pulley Kit contains the parts needed to replace damaged or worn-out upper and lower pulleys on SRAM Eagle Mechanical Rear Derailleurs, restoring functionality and performance. Specifications: Model Compatibility: Eagle NX Mechanical Rear Derailleur | Eagle SX Mechanical Rear Derailleur | S100 Mechanical Rear Derailleur Color: Black Each Kit Includes: (1) 12t Upper Pulley with bushing (1) 14t Lower Pulley with bushing (1) 13mm Steel Pulley Bolt (1) 14mm Steel Pulley Bolt (4) Shims