"Tough Enough for Cattle, Safe Enough for Horses". The Premier Panels are great for all-around panels, the best for confinement of uncooperative and crowing situations. The horizontal rails are made from Priefert's uniqu 16 gauge Quadraform tubing, menaing it is meant to stand up to a beating. Commonly used for crowding pens, round pens, arenas, paddocks, and stalls. | Priefert 10Ft Premier Panel