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Gray rubber wheels are generally the non-marking option, formulated to avoid leaving residue on floors; black rubber is the traditional compound, often slightly more economical but more likely to mark lighter floor finishes.
The color difference reflects a real formulation difference, not just aesthetics — gray rubber compounds are the standard choice when floor marking is a concern.
Choosing between rubber wheel options for finished or light-colored floors where marking would be visible and undesirable.
Choosing black rubber for a finished floor without checking marking risk. If floor appearance matters, gray (non-marking) rubber is the safer default.
Browse our Gray Rubber Wheels for real specs, capacities, and pricing.
Is gray rubber always non-marking?
It's the more common non-marking formulation, but always confirm on the specific product listing.
Is black rubber cheaper?
Often somewhat, yes, but the real deciding factor should be your floor's marking sensitivity, not price alone.
