This is a Maspro antenna splitter (separator). I used it for about a year, but haven't used it since and it's been stored in its box. It's a used item, but it's in good condition and works perfectly. The box is over 3cm thick, so I will fold it for shipping to save on shipping costs. Model: SR3-P I am also selling the cable to connect the antenna to the TV, so please take a look if you're interested.