MSC is a leading North American distributor of metalworking and maintenance, repair and operations (MRO) products and services. We offer more than a million products and have over 75 years of experience across dozens of industries. Our purpose is to execute on our Built to Make You Better brand promise. From our founder Sidney Jacobson selling tools out of the trunk of his car in 1941 to becoming a publicly-traded Fortune 1000 company with over $3 billion in annual sales, we continue to be positioned for growth.