WCS Butano handlebars with internal guide for gravel bikes. These unique handlebars have quite a following with enthusiasts, both gravel and road.their wide drop offers adventurous riders a higher level of control and confidence. They also benefit with the level of comfort they provide such as internal cable management for minimalist style and a comfortable ergo-aero top for added hand support. Specifications : Material : triple-butted 6066 alloy Bend shape : compact Top : ergo-aero Width : 40, 42, 44, 46cm Drop : 115mm Reach : 73mm Drop flare : 18° Backsweep : 5° Socket diameter : 31.8mm Internal wiring : fully or partially (wider cable sleeve may interfere with wiring). - compatible with Shimano EW-RS910 junction box Weight : 290g (42cm) Colour : Blatte Incompatible with Ritchey C260 stem