Full Speed Ahead Comet HD Modular 1x Crankset - 175mm Shimano 12-Speed 32t Direct Mount MegaExo Spindle BLK 177mm Q-FactorFull Speed Ahead Comet HD Modular 1x Crankset 175mm Shimano 12 Speed 32t Direct Mount MegaExo Spindle Black 177mm Q Factor. The FSA Comet crank is a stiff modular 1x crankset with a 24mm alloy spindle offering high value for the price. Solid forged 6061 aluminium arms put power and durability at the forefront with channeling at the back to trim weight. A no pinch bolt design on the left hand crankarm makes fitting easier and looks cleaner. The modular