ROCK SOLID SpecificationsMATERIAL: Alloy crown, steerer and dropouts. 34mm carbon legs.WEIGHT: 1.6lbs.STEERER OPTIONS: Straight (1.125") or Tapered (1.5 - 1.125")OFFSET: 44mm (QR), 42mm (15mm)BRAKE MOUNT: 160mm PM (Disc only)WHEEL SIZE: 26", 27.5", 29"AXLE:Â QR