Flaming River straight motorsports steering columns are specially designed for competition use in mind--and are manufactured from mill finish 304 grade stainless steel tubing with a 1.75 in. diameter. The columns feature a 3/4 in.-36-spline output shaft, and an upper 3/4 in. smooth-end design to accept a quick-release steering wheel hub. Flaming River offers these straight motorsports steering columns in a choice of either classic or collapsible designs to fit your race vehicle's needs.