Made from metal materials for wear resistance and protections, maintaining excellent even in harsh environments while extending tool lifespans This 11 piece impacts socket adapter includes 1 / 4 ", 3 / 8 ", and 1 / 2 " drive sizes for automotive, household, and mechanical repairs, designed to handle high force demands with precisions for professional and DIYer enthusiasts Features steel construction with precisely machined inner wall and elastic fastening structure to bolt slippage, enhancing work efficiency during complex repairs Suitable for most pneumatic wrenches, electric wrenches, and manual wrenches on the markets, covering over 90% of vehicle models and machinery, ensuring good under maximums force conditions Ideal for automotive workshops and technicians working on engines,, and critical components, while equally suitable for home DIYer projects, furniture assembly, and small machinery maintenance tasks, Manufacturer: KMGDM