Comparison : Item # US-179, 1000 Pound (lb) Capacity and 4 Inch (in) Diameter Two Wheel Trolley
Item # US-270, 1000 Pound (lb) Capacity Two Wheel Trolley with Side Roller
Item # US-188, 250 Pound (lb) Capacity Two Wheel Trolley
Item # US-264, 375 Pound (lb) Capacity and 3 Inch (in) Diameter Two Wheel Trolley
Item # US-150, 500 Pound (lb) Capacity Two Wheel Trolley