This I-shaped wheel is specially designed for the material transfer of tire semi-products, and is suitable for the storage and turnover of core raw materials such as steel cords and bead wires. It is welded and formed with high-strength steel, and is tested by dynamic balance to ensure stable high-speed operation. The side plate dense rib structure is resistant to impact and deformation, which can effectively protect the wire from damage. Specifications can be customized according to needs. It is fully covered from the small size of fine wire to the large diameter model for large-scale transfer, which meets the material flow needs of various processes of tire production. It is an ideal supporting tool to improve production efficiency and ensure product quality.