For 1957 Chevy with automatic tranmission with column shifter. Self-cancelling turn signals, 4-way flashers, horn wiring, 5-way tilt adjustment, and aluminum dress-up kit. This column uses stock dash shift indicator and includes built-in neutral safety switch. Unit uses a 3/4'' 36 spline shaft and standard 3 7/8'' GM wiring harness connector. Designed for use with stock steering wheel and 69 or newer GM steering wheels.