5" Toyo Steering Column for Hydraulic Steering Orbital Valves, 12 Spline Orbital Side. This steering column will allow you to use your existing Toyo steering linkage without having to buy a coupler and then cut and weld on your steering shaft. This steering column measures 5 inches from the base of the flange to the outer edge of the shaft, and fits most brands of steering valves (Orbitals) that are commonly used in this application.