The Buyers Products Diamond Tread Aluminum Chain Carrier Provides Excellent Storage Space For Tire Chains. It'S Perfect For Class 8 Trucks, With Reinforced Structural Steel Construction And A Corrosion Resistant Black Powder-Coated Finish. The Chain Carriers Include Hinged, Tig-Welded Aluminum Diamond Tread Covers With Locking Hasps. The Chain Carriers Are Pre-Drilled For Simple Frame Mounting.