Zipp Vuka Aluminia Clip Top Handlebar Fittings 2016 The Vuka Alumina Clip is made with the industry standard 222mm clamp diameter for maximum versatility, making it compatible for Vuka Alumina Extensions, the new Vuka Extensions (carbon) as well as most extensions on the market Extensions sold separately The clip has a large armrest for increased comfort Made from 2014 series aluminum Weight: 310g