The chainset is a crucial element in Campagnolo's gravel & all-road specific Ekar drivetrain design. Lightweight, secure and simple, the Ekar chainset will convince you that one chainring and no front mech is the way to go, whatever your off-road ambitions!UD carbon crank arms with Ultra-Torque 630 steel axle is super stylish, lightweight and strongProTech system provides strong, efficient, self-aligning semi axles, sealed from dirtNarrow-wide Tooth Design for efficient drive & maximum chain securityCrank boots included to protect the crank armsDon t let the apparent simplicity fool you, this chainset has been designed from the ground up. Just like the whole Ekar system, the cranks combine strength and lightweight materials. The 2-piece crankset features a strong, durable 630-grade steel alloy axle mated to a polyamide-carbon spider and beautiful UD Carbon arms. The narrow-wide chain ring securely holds the chain place over even the roughest terrain, yet still runs super efficiently.