The first Deda stem that's designed to allow fully integrated cable routing when assembled with other Deda handlebars featuring the all new DCR system (Deda Internal Cable Routing) The Vinci is the most versatile stem on the market being compatible with traditional 1-1/8" fork steerers as well as 1-1/4". The DCR system works with a standard tapered steerer with 1-1/8" upper diameter but requires a 52mm (1.5") upper headset bearing. The stem leaves room at the back for the cables to fit the gap in between the headset bearing and fork. Compatible with full internal cable routing (up to 4 cables) - Deda DCR handlebars, headset, expander bung and DCR spacers are required for internal routing (not included). Material: Alloy 2014Screws: Steel, BlackAngle: 73 degreesHandlebar Diameter: 31.7mmFork Steerer: 1-1/4" (31.75mm), adaptor included for 1-1/8"Length: 90, 100, 110, 120, 130, 140mmWeight: 190g