3/8" Drive SAE Deep Universal Socket Set, 7 Pc Deep Flex socket design provides more reach to access restricted fasteners. Made from Chrome Molybdenum Alloy Steel (CR-MO) for exceptional strength and durability. Surface Drive Technology for reduced fastener rounding. Manganese Phosphate coating for corrosion resistance. High-Visibility etched markings for quick size identification. Secondary Hard Stamping. Set includes:. GearWrench socket clip rail. Deep Universal Impact Sockets from 3/8 to 3/4 84923N