The CageMount 2 from Topeak is a practical mount that allows you to attach an additional bottle cage. This gives you optimum access to your water bottle while riding. Product features - Topeak CageMount II bottle cage adapter Compatibility: 22-38 mm handlebars Size: 8.5 x 6.5 x 2.4 cm Material Fiberglass composite / Steel Weight 43 g (manufacturer information) Scope of delivery 1 x Topeak CageMount II bottle cage adapter