The picture shows what is included in the 10" Pneumatic Large Wheel Upgrade for Universal-Style Wheeley Bars (sold separately) with 5/8" leveling screws.  You can also buy the same kit but for Universal-Style Wheeley Bars with 1/2" leveling screws if necessary (TPW10UPG-1/2").

Add six large 10" all-terrain pneumatic wheels and a tow handle to replace the standard 2-3/8" hard rubber wheels on Universal-Style Wheeley Bars. A dual inboard wheel design on the rear wheels maintains a narrow profile. With these wheels, the Wheeley Bars will raise the mount approximately 3-1/4" off the ground.  

• Replace the standard 2-3/8" hard rubber wheels on Universal-Style Wheeley Bars with 5/8" leveling screws

   

• Add six large 10" all-terrain pneumatic wheels and a tow handle

    

• A dual inboard wheel design on the rear wheels maintains a narrow profile

   

With these wheels, the Wheeley Bars will raise the mount approximately 3-1/4" off the ground