RKI; Founded in 1911 and still family owned and operated, manufactures a wide variety of extremely durable, premium quality truck boxes that offer the best value in the truck equipment industry. Steel Truck Box Features: > 14 Gauge or Thicker Steel Construction > High Security Stainless Steel Hinges > Tough Polyester Powder Coat Finish in black or white > Durable Spring Assist Lid Opening on all Top Opening Models > Full-size Easy to Grab Stainless Steel Paddle Latches Aluminum Truck Box Features: > Rugged Bright Diamond Treadplate Aluminum Hull with Smooth Aluminum Bottom > Sealed Gas Shock Lid Supports on all Top Opening Models > Same Dependable Design and Durable Construction as our Steel Truck Boxes > Available in clear or black powder coat.