3piece 3/8inch drive locking extension set designed for reliable socket retention and faster attachment in tight or hardtoreach spaces. Key benefits Secure socket retention: each extension has a positive locking mechanism that holds the socket in place, reducing the chance the socket will remain stuck on a fastener or fall off during use. Fast, reliable connection: four recess detents in the drive square allow quick, tactile engagement with compatible 3/8inch drive sockets and ratchets. Durable finish for daily use: polish chrome finish helps resist corrosion and makes the extensions easy to clean after exposure to grime and debris. Features Three locking extensions for increased reach and flexibility with 3/8inch drive tools Locking mechanism secures the socket to the extension for safer operation Four recess detents in the socket drive square for quick attachment and confident retention polish chrome finish for surface protection and easier maintenance Compatible with standard 3/8inch drive sockets and ratchets Practical applications Automotive : reach recessed bolts on engine components, transmission housings, or brake assemblies without losing the socket. Equipment maintenance: service motors, pumps, and machinery where access is limited and secure socket retention is essential. Home projects and assembly: work in cabinets, behind fixtures, or other confined spaces where added reach and reliable socket hold simplify the task. This set delivers practical, dependable performance for professionals and DIY users who need secure socket retention, quick attachment, and extended reach with 3/8inch drive tools.