General description Sealey NS053 Premier Non-Sparking Socket is designed for professional use, manufactured from high-quality Beryllium Copper. This socket features a WallDrive® configuration, ensuring a secure fit and reducing the risk of damage to fasteners. Technical specifications Model No.: NS053 Material: Beryllium Copper Socket Size: 20mm Drive Size: 1/2" Square Drive Configuration: WallDrive® 12-point socket Lifetime guarantee* Other information