Depending on your age, you are either very familiar with the RJ11 connector or have no idea what it is. Simply put, RJ11 adapter ends are usually found on telephone cables. It’s been that standard for quite a long time, and is still used today. We know how important it can be to couple your cables together to extend them out or even make your own custom cables, so we provide you with a variety of RJ11 adapters to suit your needs. We even provide some options on how to split your telephone line in two, though it won’t give you a second phone number for free.