A set of 29 metric long extension tubes, including metric and imperial long extension tubes as well as an extended connecting rod. Made of alloy steel, they are compatible with pneumatic tools and manual wrenches. They are mainly used for maintenance of automotive repair equipment and mechanical maintenance. They are stored in a hard tool box. The specifications are complete. After use, wipe them clean and store them in a dry place.

This 29-piece metric/imperial long socket set features a 1/2-inch drive square head design, including metric long sockets, imperial long sockets, and extension rods, ideal for automotive repairs, equipment maintenance, and mechanical servicing. The socket bodies are made of alloy steel, compatible with both pneumatic tools and manual wrenches. The extended shafts allow access to deep-seated screws and nuts, reducing operational limitations during installation and removal.

The set is fully equipped: 15 metric hex long sockets cover sizes from 10mm to 24mm; 11 imperial hex long sockets range from 3/8 inch to 1 inch; and three extension rods measure 75mm, 125mm, and 250mm respectively, enabling flexible adjustments based on working distances. All sockets are clearly labeled and neatly arranged, making it easy to select the correct size daily.

All tools are stored in a durable plastic toolbox featuring fixed positioning slots, ensuring each socket and rod stays securely in place and prevents movement or scattering during transport. The case includes a secure snap closure for added stability, making it convenient for on-the-go use or field work. Clear size markings on the tools allow quick identification, improving efficiency during assembly and disassembly.

When using the set, always select the appropriate socket according to the fastener size, ensuring a snug fit over nuts or bolts before applying force to avoid misalignment. Ensure proper connection of extension rods and maintain a firm grip to prevent tool slippage. After use, wipe the tools clean and return them to the case, storing in a dry, well-ventilated area to minimize rusting.

This set is suitable for standard metal fastener operations but not recommended for heavy-duty removal beyond its specified range. For repair tasks requiring both metric and imperial sockets, this combination offers practical convenience, eliminating the need for frequent tool switching.