Long Straight Line Skates are the ultimate heavy duty roller dolly. These rugged skates are fabricated from high quality North American steel and fully welded to handle the weight of your most extreme moves. Two rows of tandem rollers in a long frame provide maximum stability under load. These Skates are favored for handling the heaviest jobs for machinery movers, riggers, stevedores and contractors. Capacities range from 10 Tons (20,000 lbs.) to 100 Tons (200,000 lbs.).