Tooltopia offers dual wheel dollies for semi-truck tires and agricultural tire dollies for larger implement tires. This automotive equipment allows the operator to install/remove wheels without straining your back. The technician rolls the dolly under the mounted wheel and jacks up the dolly’s bottom support rods to remove the vertical force on the lug bolts. After the nuts are removed, the assembly is maneuvered onto the dolly and then both are moved. When installing wheels, the dolly’s support arms hold the tire into the correct position so it can be mounted.