This is a RJ11 modular female to female coupler.The RJ11 Inline Coupler is allow telephone cables to be joined together.Enables much longer cables to be made from shorter cables.RJ11 Telephone Inline Coupler works with any telephone cables.The RJ11 Coupler features 4 pins contacts.Material : PlasticDimension : ~3.7(L) x 2(W) x 1.6(H)cm
