Not marked as X1 specifically but the part Number FCXC B1 resolved to: "These areX1 Carbon cranks.
Sram X1 Dub Carbon Eagle Crank 11 / 12 Speed 32T 175mm Unused RRP £250
SRAM Force Dub Carbon Crank Arms AXS 172.5mm (D1)
SRAM FORCE DUB Carbon Cranks 170mm
SRAM X1 Carbon Crankset DUB Boost 148 Eagle 11/12 Speed 175mm 32T CL: 52mm
SRAM X1 Carbon MTB Crankset w/ Single Chainring 175mm BB30 Black/Red
SRAM Force Crank Arm - 175mm 12/13 Speed Direct Mount 8 Bolt Dub Carbon Chuck E1
