Engineered exclusively for Giant OverDrive Aero steerer tubes, the Contact SLR AeroLight is an ultralight and stiff composite stem that offers aero-enhancing integration, easy to adjust cable management and sleek looks.FEATURES: Works with OverDrive Aero steerer tubes only Integrated aero design unifies the top cap, cables andspacers with the head tube for improved aerodynamics Ultra-light composite design delivers maximum stiffness at a superlight weight Intuitive design guides all cables under and inside for optimized aerodynamics and sleek looks. Fits current generation Contact Aero or Contact D-Fuse handlebars -10° angle Available in eight lengths from 80mm to 140mmSPECIFICATIONS:Weight: 123g (100mm)Length: 70/80/90/100/110/120/130/140mmAngle: -10°Bar Clamp Diameter: 31.8mmSteerer Tube Clamp Diameter: D-shaped OverDrive Aero, 1 1/4 inchStack Height: 44mm