Its fully working and I've found it gives consistent readings. Crank arms are 172.5 mm in length and chainrings are compact 52/36 110 BCD. This is 10 or 11 speed compatible.
FSA PowerBox Carbon Power Meter Crankset 172.5mm 54/40t
FSA PowerBox Power Meter Crankset – 53/39T 172.5mm – BB386EVO
Shimano Ultegra R8100 4iiii Dual Precision Pro Powermeter Crankset– 175mm 52/36T
Shimano Dura Ace R9200 4iiii Dual Precision Pro Powermeter Crankset 172.5 50/34
Sram Red Quarq Powermeter Crankset, 170mm, 50/34T, BB30 30mm Axle
