About this item Easy Connection: 4-way phone line splitter with a 3 inch cable for sharing a single phone line among four devices. No need for complicated wiring or tools. Versatile Compatibility: This coupler is compatible with standard RJ11 6P4C cables, making it suitable for various applications such as telephones, fax machines, modems, and more. Durable Build: Constructed with high-quality materials, this coupler ensures long-lasting performance and durability. Compact Design: The compact and lightweight design of the coupler allows for easy portability and storage. Take it with you wherever you go or keep it as a spare in your toolbox. Size: 5.31 x 3.43 x 1.14 inches.