[DURABLE and STRONG: Made of high-grade 6061 aluminium alloy Double Butted Hard Anodizing and Numerical controlled precision bending VERY LIGHT WEIGHT: 20mm rise 310g (11 oz) / 35mm rise 340g (12 oz) "SUPER WIDE: The 31.8 handlebar is 780mm wide its great width to help you control easily your mtb bike for all mountain extreme riding" MORE COMFORTABLE and CONTROL: The riser bars give you much more control and makes riding position more comfortable SET-UP and CUT DOWN MARKINGS: A central set-up grid allow accurate fine-tuning cut down marks of width are on both side of bar easy to install and adjust the riser handlebar width to 680mm 700mm 720mm 740mm 760mm etc.]