Running cows or heifers into the pen is a one person job. The heavy duty construction allows for easy and safe operation and years of use. There are two sets of swinging split gates on each side of the headgate which allows for easy access to the cow as well as nursing calves. The standard configuration is 10' x 10'. However, the heavy duty 10' - 1 1/4' square tube side panels can be substituted with 12' panels to make a 10' by 12' pen.