Sturdy 1-1/4" x 12-gauge steel tubing construction Big 16 x 8" pneumatic tires provide maximum cushioning and easy handling over rough or smooth terrain Sturdy 1" cold roll steel axel is encased in a steel housing for a hefty capacity and longer truck life High position skid rails add extra strength and prevent handle breakage if the truck is dropped Shoe 22" wide x 15-1/4" deep for handling potted plants