Features: 1. Premium Material: uses high-quality materials and gold-plated metal contacts to great connection and sound quality. Use it to extends life of your phone cord and anti- phone cord. 2. 360 degrees Rotation Anti- Cords: The Phone Line Detangler automatically rotates 360 degrees to effectively prevent your coiled phone cord from being tangled and messed up, and you would not feel frustrated with entangled cord. 3. Easy to Use: Stop untangling twisted telephone cords. With an easy to install phone detangler twisted cords are a thing of the past. Simply snap the detangler between the telephone handset and the cord. 4. The telephone cable detangler applies to family or office fixed-line telephones which work with a standard RJ9 telephone line, 4P4C Gague handset coiled cord. size: Thread length about 3cm, total length about 7cm Material: Plastic+Metal colour: Black+Transparent Package Contents: 4 x Telephone Cord Detangler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.