Need some serious wheels for heavy loads? These SYRATION V-Groove cast iron wheels are absolute beasts! Each set of 4 can handle up to 4000 pounds - yeah, you read that right. The 6-inch diameter with 2-inch width gives you stability for days. They've got roller bearings that make everything run super smooth, and the noise reduction design means no annoying squeaking or jamming. The V-groove design is perfect for guiding loads along tracks - think production lines, conveyor systems, or anywhere you need controlled movement. Made from high-quality cast iron, these things are built to last through pretty much anything. They can handle chemicals, solvents, acids, oils, and extreme temperatures without breaking down. The hub length is 2-7/8 inches with a 1/2-inch axle diameter, and they come with a spanner bushing for easy installation. Whether you're setting up industrial equipment or need reliable wheels for heavy machinery, these won't let you down. They'll save you so much time and effort moving heavy stuff around!