The GoJak Model 6313 is an ox. Able to jack vehicle weights to 2800kg(6,200 lbs)when using 4 unit or 500(1,550 lbs). per wheel, including light duty trucks with tire widths up to 32cm ( 13 inchesGoJak Model 6313) wide and 91cm ( 36 inches) tall. The GoJak Model 6313 auto jack / dolly is the most versatile and strongest GoJak® in the line. It has steel rollers, wider axles and two heavy-duty 125mm (5-inch) diameter, and two heavy-duty 100mm (4-inch) diameter, double-ball raceway casters. This combination makes for easier rolling with heavier loads. The GoJak Model 6313 has a 5-degree offset pedal for additional foot-to-tire clearance. The under frame clearance increased by mounting the ratchet mechanism on the top of the unit which is very useful when pulling cars up flatbed trucks. The GoJak Model 6313 is available in left and right hand units.