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Introducing Proto's 3/8 drive metric impact sockets - engineered for professional-grade industrial maintenance and assembly tasks. Boasting a three-eighths inch square drive that's compatible with drive tools of the same size, these impact sockets come in metric sizes measured in millimeters to fit fasteners with a metric size head. With their six-point socket shape, they ensure a snug fit and prevent rounding of the fastener for long-lasting durability. Impact-rated drive provides superior torque for demanding jobs without slipping or stripping. Perfect for use in automotive repair, construction, manufacturing, and more - make these impact sockets your go-to choice for versatile, high-performing fastening solutions!