8" x 2-1/2" Cast Iron Wheel Rigid Caster - 1,800 Lbs Capacity dumpster rollers the current pictures are just

the current pictures are just a representation and not exact for the caster

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While metal wheels are strong

300°F* Mounting Plate: 6-1/4" x 7-1/2" V-Groove Width: 1-3/8" Bolt Hole Pattern: 4-1/2" x 6" to 4-1/8" x 6-1/8" V-Groove Depth: 11/16" Mounting Bolt Size: 1/2" or Smaller Link to Replacement Wheel:  Weight: 33 Lbs

but are specifically designed for high temperature or corrosive applications

8" x 2-1/2" Cast Iron Wheel Rigid Caster - 1,800 Lbs Capacity dumpster rollers the current pictures are just8" x 2 1 2" Cast Iron Rigid Caster Part #: Q7180R01STL Cast Iron is the standard metal wheel used by most unless a heavier capacity or greater impact strength metal wheel is needed. For applications requiring more capacity or impact strength, check out the ductile steel & forged steel wheel caster options. While semi steel is very strong, it is tough on floors and could lead to floor damage. For heavy duty floor protective wheels, be sure to check out