Made from ultra-strong Aluminum 7050 T7 alloy to reduce weight and designed with clamps that won't loosen no matter how hard you rideRider insight driven 132° opposing steerer clamp bolts deliver optimal knee clearance, while maintaining alignment during tighteningHighly machined with a two-tone anodized finish for high quality look as well as function35 bar clamp diameter, 1-1/8'' steerer clamp, 40 mm steerer clamp stack