This is CAT5 RJ45 Network Cable Extender Plug Coupler Joiner. A very handy little coupler. Ideal choice for connecting two ethernet patch leads/cables together. Small and easy to use， simply connect both ends of a cable. Cheap and easy way of making a longer cable with the shorter leads you already have. For use with straight ethernet/patch leads only.                                    Features            RJ45 modular female / female couplers<br>Great for connecting two Cat 5 or cat 5e cables to make one longer cable<br>Straight through wiring<br>All eight contacts are wired<br>Standard RJ45 8P8C socket to socket<br>Size: 37 x 22 x 15mm<br>Weight: 8g<br>Color: light beige<br>                                                                                                Package Includes            1 x CAT5 RJ45 Network Cable Extender Plug Coupler Joiner<br>