This is a high-precision radial open impeller part model, typically applied in small turbines, water pumps or aerodynamic experimental devices. The model presents a metallic texture, with blades distributed radially and evenly, featuring distinct aerodynamic curved-surface design and a mounting hole at the center; the overall structure is compact and highly symmetrical, suitable for CFD fluid simulation verification, CNC function testing or mechanical engineering teaching demonstrations. In detail, the blade edges are sharp and the surfaces smooth, reflecting good manufacturing process fidelity, making it an ideal digital model for studying energy conversion in fluid machinery.