The 5" 4 Pack Plate Caster offers a heavy-duty solution with a 4000 lbs total capacity, making it ideal for handling even the heaviest loads. The caster wheels are made with polyurethane mold on steel material, ensuring durability and longevity. The set includes 2 swivel and 2 rigid casters, providing maneuverability and stability, and the top plate is compatible with most applications. Additionally, the casters come with a 90-day hassle-free return policy and a 100% satisfaction guarantee, making it a risk-free purchase for those in need of a reliable and cost-effective solution for moving heavy machinery or furniture.