4" x 2" Polyurethane on Iron Wheel Swivel Caster with Total Locking Brake - 800 Lbs Capacity

4" x 2" Polyurethane on Iron Wheel Swivel Caster with Total Locking Brake - Part #: 146UIRB420SBTL Polyurethane on iron caster wheels provide better floor protection, non-marking treads, quieter rolling, and smoother rides compared to steel or phenolic wheels, while maintaining similar load capacities. These wheels are more durable and heavy-duty than polyurethane on polyolefin wheels but are heavier and slightly harder to roll than polyurethane on aluminum core wheels. Poly on iron wheels are ideal for heavy-duty use when you want a durable polyurethane option without the cost of premium poly on aluminum casters. They are suitable for most applications, but not recommended for hot/cold temperatures or prolonged exposure to direct sunlight. Poly on Iron wheels come in variety of colors, tread thicknesses & durometers to meet your application needs. While the color doesn’t affect performance, the tread thickness & durometer typically do. Typically, the thicker the tread is, the