Positioning and marking: fixed pipeline extension to ensure precise alignment and quick setup, reducing rework. Gantry design: aluminum alloy gantry with reinforcing ribs on the underside provides strength while keeping weight low for easy handling and durable performance. Durable construction: aluminum alloy with advanced processing for a clean, attractive, and convenient tool. Compatible with national standard metric and imperial splints for broad compatibility. Scope of application: suitable for factory production, refrigerator maintenance and use, refrigeration system installation, chemical pipeline connections, automobile maintenance and use, cold storage installation and use, and household refrigeration pipeline work. Use scenarios Factory production line: extend fixed pipelines during assembly to achieve accurate positioning and faster setup, improving workflow efficiency. Refrigerator and cold storage work: assist in maintenance, system installation, and pipeline connections to ensure reliable, leak installation. Automotive and chemical piping tasks: support and installation work where precise alignment and durable performance are required in challenging environments.