Single-Sided Arrow Pen KitsOur single sided arrow pen kits feature the ability to stage 6 steers or calves with your choice of an inside loading setup or an outside alley loading setup. APK1, APK2 Single Sided Arrow Pen Kits Prieferts Arrow Pens allow you to pre sort and stage your timed event cattle to ensure that your event moves along without delays. These pens are typically installed between the holding pens and the roping chute in an arena. Our single sided arrow pen kits