The Yakima 8000422 60" CoreBars are a set of 2 steel aero crossbars which are used with Yakima StreamLine Towers. The 60" CoreBars are designed and constructed from galvanized roll formed steel and a black vinyl protective coating, built for long lasting strength and durability. The CoreBars are the first aerodynamic steel crossbar on the market and are available in 4 different lengths: 50", 60", 70", and 80". End caps are included with the bars.