Columbus Compass HeadsetThis high-quality headset is specifically designed for road use as it creates a smooth rotation for your stem/bars. It features a solid carbon construction which is engineered for tackling all the challenges of a long day out on the road. Columbus has completed this model with heat-treated steel bearings for smooth performance and unrivalled durability, so it's more than capable of enduring the most demanding of rides. Features: Material: Carbon Bearings: Heat-treated Steel Use: Road Type: Integrated Steerer Diameter: 1 1/8 - 1.5 tapered and 1 1/8 options available to select Genuine Columbus partBuy Columbus Components from Chain Reaction Cycles, the World's Largest Online Bike Store.