6" x 2-1/2" Crowned Ductile Steel Wheel - 3,500 Lbs Capacity inverted track casters 5" x 1-1/4" Steel Wheel

5" x 1-1/4" Steel Wheel Swivel Caster with Brake - Part # Q525001STLTLB

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For a metal wheel with similar capacities and durability

Swivel Construction: Double Ball Raceway - Kingpin (w/ Dust Cover)

The forged wheel is the ultimate heavy duty wheel

6" x 2-1/2" Crowned Ductile Steel Wheel - 3,500 Lbs Capacity inverted track casters 5" x 1-1/4" Steel Wheel6" x 2 1 2" Crowned Ductile Steel Wheel Part # LCDS625 Ductile steel wheels offer comparable strength, impact resistance, and durability to forged steel wheelsat a more affordable price. Made from a blend of high performance alloys, they support significantly more weight than cast iron wheels, though slightly less than forged steel. While ductile steel is extremely tough and resilient, it can be harsh on floors and may cause damage over time. For