40 tooth Specialized single crank set. Removed from a 2024 12 speed Specialized hybrid.
Prowheel RPP FD16A TT 1 x Gravel Chainset - 40T - Select Crank Arm Length
Specialized Langster Single-Speed Bike/Fixie Small
104BCD 32-42T MTB Bike Crankset+BB Narrow Wide Chainring 170mm Single Crank Arm
BUCKLOS 104BCD 30-42T MTB Bike Crankset Narrow Wide Chainring 170mm Single Crank
IXF 104BCD 32-42T MTB Bike Crankset BB Narrow Wide Chainring 170mm Single Crank
