General description The Kennedy 4MM Insulated Deep Hexagonal Socket is designed for use with 3/8" square drive tools. This socket is rated for 1000 V, making it ideal for electrical applications where safety is a priority. Its deep hexagonal design allows for better grip and torque on fasteners, ensuring efficient performance in various tasks. Technical specifications Size: 4MM Drive type: 3/8" square drive Insulation rating: 1000 V