This 18 mm socket with a 1/2 inch square drive is ideal for fastening hexagonal nuts, offering a wrench depth of 13 mm for secure grip and efficient torque transfer. Its 38 mm length and impact screwdriver compatibility make it suitable for demanding industrial tasks. Key features: - Socket size: 18 mm for hexagonal nuts - Wrench depth: 13 mm for optimal engagement - Length: 38 mm for versatile use - Connection size: 1/2 inch square drive - Suitable for impact screwdrivers with durable surface protection