5000 Series Aluminum Body with Impact Bearing Ridges 1.5mm 5052 Aluminum Corners A380 Aluminum Wheel Housings A380 Aluminum Trolley Housing Retractable Aluminum Trolley SAE 304 Steel Rivets Full aluminum travel case. Sterling Pacific manufactures full aluminum travel cases from reinforced 5000 series aluminum and die-cast A383 aluminum. Repair shop & headquarters: Sterling Pacific 3515 Airway Dr Reno, NV 89511