If the neck rail is placed too low, or too far back, cows may be reluctant to use the stalls. If cows tend to lie too far forward, the neck rail may be located too far forward, or too high. Minor adjustments may be required to improve stall acceptance or keep stall beds cleaner. Pipe, tubing and cable training rails are commonly found. Cables are not often recommended, due to chance of injury to vertebrae in the neck.
Steel cable can also fray and cause injury.
Pipe and tubing should be at least 1 inch in diameter.