Engineered exclusively for OverDrive Aero steerer tubes the Contact SL AeroLight +15° stem is a lightweight and stiff alloy stem featuring a positive 15° angle and easy-to-install cable integration for a clean streamlined cockpit. Features Made for OverDrive Aero steerer tubes only. Ultra-light alloy design delivers maximum stiffness at a superlight weight. Easy cable management guides all cables under and inside for a clean look. Fits current generation Contact Aero or Contact D-Fuse handlebars. +15° angle. Available in four lengths from 75mm to 105mm. Specifications Weight: 163g Length: 75/85/95/105mm Angle: +15° Bar Clamp Diameter: 31.8mm Steerer Tube Clamp Diameter: D-shaped OverDrive Aero 1 1/4 inch 1.25mm