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Introducing Proto's 2-1/2 drive SAE impact sockets - designed for superior strength and performance. Featuring a two and one-half inch square drive that's compatible with drive tools of the same size, these impact sockets come in sizes that are measured in inches and fractions of an inch to fit fasteners with an SAE (inch) size head. The six-point socket shape ensures maximum torque while maintaining a firm grip on the fastener. Made from durable steel for long-lasting use, these impact sockets are ideal for industries such as automotive and construction, making it perfect for assembling or disassembling large machines. Easy to use with both hand tools and impact drivers, invest in Proto's impact sockets for the ultimate level of accuracy and reliability.