Custom made from the highest quality 4130 chromoly, Box One handlebars feature a proprietary 13-butted taperThe added stiffness significantly improves bike handling while putting more upper body power into your pedal strokeMore power potential means getting out of the gate and down the first straight faster and accelerating quicker out of the turns31.8mm28.25`8.5`2°3°BlackBMXChromolyUPC/EAN/GTIN: 616043834405