The DUOCAI Ultralight Carbon Fiber Road Gravel Bikes are designed for riders who value performance and durability, combining strength and lightness in an integrated design. The drop bar handlebars and carbon handlebar stem offer exceptional comfort and precision in turns, while the 1-1/8" (28.6mm) bar ensures a perfect fit for most riders. This drop bar set is compatible with the DUOCAI 400/420/440 Integrated Handlebar, which features a full internal structure for a more aerodynamic and stable ride. With its robust construction and high-quality materials, the DUOCAI Ultralight Carbon Fiber Road Gravel Bikes are sure to deliver a smooth and enjoyable ride on any road or gravel surface.