The Automann Square Bolt Pattern Trunnion Stand is the perfect choice for a secure and stable mounting. This trunnion stand is made from high-quality impact-resistant plastic that is strong enough to withstand the toughest conditions. It is designed to be compatible with a wide range of tandem axle fenders, making it a great choice for any Mack application. The square bolt pattern ensures a secure fit and the trunnion stand is easy to install. FleetPride is your First Click in Heavy Duty®.