18-piece socket wrench extension set with compatibility for 1/4", 3/8", and 1/2" drive sockets - Various size compatibility: This set accommodates sockets with 1/4", 3/8", and 1/2" drive sizes, making it a versatile choice for a wide range of hand tools and screwdrivers. Ideal for different repair and machine assembly tasks. - Durable construction: Made from heat-treated chromium-vanadium steel. Each piece is built to withstand heavy use and perform reliably in demanding environments. - Easy transitions: Includes swivel joints and socket adapters to smoothly switch between drive sizes and working angles. This provides the flexibility needed for many projects, from repairs to maintenance. - Efficient identification: Clear size markings on every tool enable quick recognition, helping users select the correct socket or adapter fast, improving productivity and reducing downtime. Use scenarios - Automotive repair and maintenance in tight engine compartments where different drive sizes and angles are required to reach bolts. - Machinery installation and servicing in workshops, where access to bolts at awkward angles is common. - Home improvement and appliance servicing, such as furniture assembly or servicing tight-area fasteners, where quick size recognition and flexible access save time.