Master mechanics and hobbyists alike demand their tools have the highest quality materials and precision manufacturing. With this in mind, Powerbuilt created the 38-Piece 1/4 inch Drive Mechanics Tool Set. All tools are made from professional-grade materials and designed and produced with the precision and quality required of professional mechanics. The Mechanics tool set includes a robust selection of common-sized sockets in shallow and deep styles in both SAE and metric sizes. A 72 toothed sealed head ratchet with a 5-degree swing for smooth action and better torque in those hard-to-reach spaces. And a 2-inch extension bar to further extend the reach in tight spaces. Made from Chrome Vanadium (Cr-V) steel, with mirror polished plated finish for durability, and corrosion resistance these tools are assured a long tool life. This set comes in a protective heavy-duty blow mold carry case for easy organization and transportation of tools.