The BLACK & DECKER J7212MPF is a Proto® 3/8-inch Drive Metric High Strength Magnetic Power Socket, specifically designed for professional use. This 12 mm socket features a magnetic design that securely holds fasteners in place, reducing the risk of dropping them during use. Constructed from high-strength steel, it offers exceptional durability and resistance to wear. The 3/8-inch drive size is compatible with various ratchets and impact tools, making it versatile for different applications. Its polished finish ensures easy cleaning and corrosion resistance, making it a reliable choice for automotive and industrial tasks.