The Vulcan 34571 Steel Light Duty Wheelbarrow Tray, designed for use with 6 cubic feet wheelbarrows, is constructed from sturdy steel with a gauge of 22. It’s compatible with the Vulcan Sku 587.9713 wheelbarrow. However, to determine if it will fit your Kobalt wheelbarrow, I recommend checking the dimensions and specifications of your Kobalt wheelbarrow. Compare those with the dimensions of the Vulcan tray: Capacity: 6 cu-ft Size: 22 ga Material: Steel If your Kobalt wheelbarrow has similar dimensions and a compatible attachment mechanism, the Vulcan tray might be a suitable replacement.