N64 block thingy

[MaxPower]

I seem to have lost the block thing that goes into the back of the N64 to accept an aerial lead from your TV does anyone know what this item is called and whether I can get it from somewhere.

Thanks for your help.

 

[MaxPower]

Cheers for the replies chaps, at least I now know what I am looking for keep your ears peeled for me would ya