For those who already own the Universal-Style Wheeley Bars, JMI offers an important upgrade consisting of a tow handle where there was not one before and six large 10" All-terrain Pneumatic Wheels to replace the standard 2-3/8" hard rubber wheels of your existing wheeley bars. The wheely bars dual inboard wheel design on the rear wheels maintains a narrow profile while the front offers maneuverability and control with the tow handle. Larger wheels mean generally smoother performance on rough surfaces. And large pneumatic wheels let you adjust the tire pressure and the hardness of the ride. Now you will have the ability to move your tripod or pier mounted telescope easily and with good control from one place to another.