This 18 mm socket with a 3/8 inch square drive is ideal for fastening hexagonal nuts, offering precise torque application in confined spaces. Its 11 mm wrench depth ensures a secure grip, making it suitable for impact screwdrivers and various industrial tasks. Key features: - Socket size: 18 mm for hexagonal fasteners - Wrench depth: 11 mm for firm engagement - Connection: 3/8 inch square drive compatible with standard ratchets - Impact-rated for use with impact screwdrivers - Durable surface protection for extended tool life