STANDARD FEATURES - Tube Main Frame Construction - 24" O.C. Frame - 24" O.C. Sidewalls - 24" O.C. Roof Bows - Spring Axles - EZ-Lube Hubs - Idler Axle (Single Axle) - 4-Wheel Electric Brakes (Tandem Axle) - 15" Tires - 2" Coupler (Single Axle) - 2-5/16" Coupler (Tandem Axle) ...