Carbon steer tube, UCI approved, Compatible with integrated and non-integrated headsets. RAD(Relief Area Design) steerer protects against overtightening. Includes the innovative BearTrap headset adjuster. 360g 650c, 370g 700c weight. 300mm Steerer length. Material: Super high modulus carbon fiber monocoque single layup design with EMC compression-molded dropouts. Steerer: 1 1/8" or 1" super high modulus carbon fiber. Dropouts: CNT carbon composite. Wheel Size: 650c or 700c. Rake: 38mm 650c, 43mm 700c. Finish: Matte Carbon Weave. Team Cyclist is an authorized Easton dealer and will honor all manufacturer warranties.