Possibly the best youth handlebar on the market. Constructed of UD carbon fiber to be light and compliant. Available in both 19mm and 22.2mm grip diameters. Specifications DIMENSION 19mm Version 22.2mm Version Width 680mm 680mm Center Diameter 31.8mm 31.8mm Bar End Diameter 19mm 22.2mm Rise 40mm 15mm Back Sweep 9° 5° Up Sweep 5° 3° Weight 127g 166g NOTE: 19mm version requires 19mm grips . Most controls (brakes, shifters, dropper post levers) are designed for 22.2mm and will require a shim to fit on a 19mm bar. Do not use the carbon bar for downhill, dirt jumping or other forms of riding that put extreme stress on the bar.