Features: 【Broad Compatibility Design】This telephone extension cable supports connection with multiple devices, ensuring seamless integration with various voice telephone systems. 【Durable Plastic Construction】Crafted from highly quality plastic, it offering exceptionally abrasion resistance and pressure tolerance. 【Flexible Extension Capability】Features outstanding extensibility to effortlessly lengthen existing telephone lines, resolves insufficient cabling issues. 【Simple Installation Structure】Enables rapid tool-less connection, facilitating user-independently operating to save time and effort. 【Clear Transmission】Optimised transmission technology ensures clear and stability for voice calls. Specifications: Component: plastic Size: Length optional: 1 meter, 2 metres (optional) Types：A: RJ12 (6P6C) male/SDL 4P male, Type B: SDL 4P male/SDL 4P male Parameters: Support clear voice transmission, consistent a variety of telephone equipment Color: as shown white Suitable for home, office and other circumstances to achieve phone line extension and stable connection Package Includes: 1PC Networking cable extension note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.