The 3 Inch Heavy Duty Stainless Steel Low Gravity Casters by Nefish are designed for industrial use, featuring a sturdy construction with a weight capacity of 13 lbs. Made of SUS 304 stainless steel and nylon, these casters are long-lasting and durable. The set includes 4 casters with a sleek silver and black color finish, suitable for heavy-duty applications. Perfect for home organization and household supplies, these casters provide reliable support and stability for various items.