Compatible with RJ9 4P4C Landline Phones - Standard handset cord works withmost desk phones, wall phones, corded telephones, and office communication systems. Check your device port beforepurchase. Extends to 8 Feet, Coils to 1.4 Feet -Stretches up to 8 ft for comfortable use whiletalking; recoils to compact 1.4 ft when not inuse, keeping workspace tidy and tangle-free. 4 Pack - Great Value for Home & Office -Includes four coiled handset cables. Perfectfor replacing old or damaged cords, orequipping multiple phones in office, call center, hotel, or home. Durable & Flexible Coiled Design - Madewith quality materials to withstand dailystretching and retracting without losingelasticity. Resists kinks and tangles for long-term reliability. Designed to work seamlessly with desk phone： Fits any handset port on Voip phones (T52 T52S T53 T54 T54S T56 T57 T59, T40 T40G T40P T41 T41P T41S T42 T42G T42S T44 T46 T46G T46S T48 T48G T48S, T30 T31 T32 T32G T33 T38 T38G, T19 T21 T23 T27 T29).Universal RJ9 Compatibility Easy to Install - No Tools Required - Simplyplug each end into the handset and base unit.No adapter or extra accessories needed.Quick, hassle-free replacement Coiled Wire 8Ft Uncoiled / 1.4Ft Coiled Landline Phone Handset Cable 4P4C Telephone Accessory Black