This innovative new DI2-Clip is a specific accessory for Deda's stunning new stem that offers a clean, smart and easy to use solution to help make Shimano's DI2 system a more integrated experience.No tools or straps are required to install the clip thanks to the simple plug-in system that has been used. Made from a thermoplastic material for lightness and durability.This only fits the Deda Superzero StemTech SpecsCompatible with Deda Superzero Stems only,Material: Thermoplastic material,Handlebar Diameter: 31.7mm,Finish: Black,Weight: 7g.