Grainger

W.W. Grainger is a public B2B distributor of maintenance, repair, and operations (MRO) supplies, safety gear, and facility products for businesses. It sells through a high-touch distribution network and its Endless Assortment e-commerce brands Zoro and MonotaRO, alongside services like inventory management and technical support. Founded in 1927 and headquartered in Lake Forest, Illinois, Grainger serves more than 4.5 million customers and reported $17.2 billion in 2024 revenue.