Double-Sided Arrow Pen KitsOur double sided arrow pen kits feature the ability to stage 12 steers or calves with your choice of an inside loading setup or an outside alley loading setup. APK3, APK4 Double 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 double sided arrow pen kits