4130 trapezoid heat-treated tubular chromoly crank armsTrapezoid shape helps reduce flex while still offering a grindable surfaceWrap-welded pedal bossesRHD and LHD compatible sprocket bossesAvailable in 165,170 and 175mm lengths48 spline press fit style interfaceBB Axle included170mm19mmCP34.5oz1UPC/EAN/GTIN: 811120037100