Sram NX Eagle Dub 12 speed group kit Kit includes: NX Eagle Rear Derailleur NX Eagle Trigger Shifter Boost Sram NX Eagle DUB Crankset - available in 170mm or 175mm lengths NX Eagle Chain PG-1230 Eagle 11-50t Cassette Chain gap gauge DUB BB not included 170x32 Boost DUB NX EagleUPC/EAN/GTIN: 710845820496