Sealey WallDrive Socket 18mm Deep 3/8"Sq Drive Fully Polished --High-Quality Construction: Made from premium steel for enhanced durability and performance in demanding applications. --18mm Deep Design: The deep socket design allows for easy access to recessed fasteners and deep-set bolts. --3/8"" Square Drive: Standard 3/8\"" square drive size ensures compatibility with various ratchets and tools. --Fully Polished Finish: Features a fully polished mirror finish that not only looks professional but also resists rust and corrosion. --WallDrive Technology: Designed to apply force to the sides of the fastener, reducing the risk of.