The Main Resource is a brand name and supplier of automotive service equipment, replacement parts, and aftermarket products, operating under the umbrella of TMR Holdings. TMR Holdings itself is a company that likely oversees various businesses, including The Main Resource and potentially others like ToolWEB, which is an online retailer of tools. The Main Resource is known for offering a "one-stop shop" experience for the automotive industry, supplying a wide range of items from air tools and chemicals to lifting equipment and tire service supplies.