Features: Made from billet aluminum using a special production process which guarantees optimum structural performance and reliability Black, high quality anodized finish External diameter: 22-29mm Internal diameter: 14mm Note: Rizoma handlebars have been designed with the aim of being multifit, therefore compatible with many different bikes. For this reason, the handlebars are not pre-drilled. Rizoma recommends to rely on a specialized mechanic to perform a correct handlebar mounting with the consequent repositioning of grips and commands.