Aluminum construction, performance crankset at a fraction of the cost of other performance sets while boasting similar featuresInnovative 4-arm spider design that trickles down all the way from the Super Record™ version to allow for an independent BCD -increased rigidity and structural integrityDouble standardized bolt circle diameter allows for use of standard, mid-compact and compact chainringsCompatible with 130mm hubs175x50/34UTSIL146/112mm Campy865g2x11UPC/EAN/GTIN: 8050046167382