This screw extractor is a must-have for any handyman or DIY enthusiast. The shaft size is 7/16". Easy-out tools that can help you remove broken screws and studs with ease. The tools are made from high-quality materials and are designed to last a long time. The tools are manufactured in the United States and are perfect for use in the automotive industry. These are a excellent addition to any toolbox and can save you a lot of time and money in the long run. Contains 7 PCs.