About ATD Tools Since 1977, ATD Tools has focused on providing professional automotive tools and equipment at competitive prices. Four decades later, ATD is still committed to providing the quality tools you need at a price you can afford.ATD's tools and equipment are quality control tested at the manufacturer, by independent labs and in the field to ensure they meet the performance and durability professional mechanics demand today and will continue to demand for years to come.We have made every effort to provide accurate specifications and pictures of our products. We do, however, reserve the right to discontinue and/or change the construction and appearance of our products as needed.