I bought these castor wheels for a project but unfortunately they are not big enough for the purpose.

The Leveling Castor Wheels Set of 4 features heavy-duty swivel casters with a total capacity of 1500kg, making them suitable for a variety of material handling applications. Made from durable nylon material in a sleek white colour, these casters come with M12-1.75 x 33mm and 1/2" -13 x 1.299" stem sizes for easy installation. The stem mount design allows for convenient mounting on a variety of surfaces, making them versatile for use in various business, office, and industrial settings. With a 2-inch wheel width and a load capacity of 3.3E+3 lbs, these casters provide reliable and efficient mobility for your equipment.