Premium Caster Wheels: Our 4-inch caster wheels are constructed from industrial-grade zinc-plated steel and equipped with high-quality precision ball bearings. The durable blue polyurethane (PU) wheels are designed to resist corrosion and rust, ensuring long-lasting and reliable performance.
Maximum Load Capacity: With a weight limit of 600 lbs per 4-inch caster wheel, the total load capacity for the set of 4 reaches 2400 lbs. Built with solid steel for long-lasting strength, these casters are perfect for tough tasks.