Thermoplastic (medium density) 3.5-inch non-marking low profile caster wheels for use on hard surfaces, and sensitive flooring

Thermoplastic (medium density) 4-inch non-marking caster wheels for use on hard surfaces, and sensitive flooring

Polyurethane (hard density) 4-inch non-marking caster wheels for easiest rolling on hard surfaces, and most flooring

Solid rubber (medium density) 6-inch non-marking caster wheels for use on hard surfaces, dirt, gravel, grass, and most flooring.

Solid synthetic rubber (soft density) 6-inch cushioned caster wheels for hard surfaces, dirt, gravel, grass, and sensitive flooring.

Polyurethane (hard density) 6-inch non-marking caster wheels for easiest rolling on hard surfaces, and most flooring

Industrial strength steel bars that transform your Snap-Loc Dolly into a Push Cart and Panel Cart