Cow Trainers are used in the stanchion barn where they are connected to an electric fence charger to give cows a slight shock when they hump to evacuate. Cows are soon "trained" and the stanchions stay much cleaner. Flexible model Trainer eliminates the need for clips. Simply tie the trainer hanging lines to overhead wire. Then fasten the rubber-coated fine strand insulated copper wire lead from overhead hot line to the cross bar. Easy-to-reach, shock-free adjustment. Trainer is free to swing or rise when bumped -- no bending or injury. Carton of 5