Yakima CoreBars are designed for use with Yakima StreamLine Towers and can be attached to a wide variety of vehicles. Yakima CoreBars are 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".