High capacity casters rated at > 850lbs. load capacity are strong enough for the heaviest workloads. Ergolastomer, MaxRok and Ductile steel wheels are among some of the strongest load bearing wheels around. Available in 3" wide treads for extra heavy duty applications gives you the ability to safely make even the heaviest equipment mobile. Great for large dumpsters, hoppers and other equipment that could use casters or replacement wheels.