The Spring-loaded back bar swings down behind the cow and is secured in to a locking catch on the side of the crush thus replacing the back chain. As the back leg is raised the bar is able to move upwards maintaining a constant pressure on the leg. This keeps the cow more comfortable and therefore more relaxed. It also eliminates over tightening of the back leg. It is supplied with a long counterweight.
There is also an option for a short counterweight for those crushes that are set under cover at a cost of $1025.00 + GST.