NES: ACCESSORY - NES-003 - RF UNIT (USED)

What condition is this item? After the title are the follow explanations of description:
(GAME) = Game cartridge or disc only.
(BOX) = Original box and cartridge/disc.
(COMPLETE) = Original box, book, cartridge/disc included.
(NEW) = Brand new, factory sealed.
(NM) = No Manual Included when NEW (new games have manuals on disc)
So if the title is "SUPER MARIO BROS. 3 (GAME)" then you know the game is cartridge only!
Note: If there is something major wrong with the game, we also list it here. For example: (BAD LABEL) = Something wrong with the label, possibly removed. Inquire for more information.

YOU REMEMBER THEM TV'S WITH THAT LITTLE SILVER SCREW-ON CONNECTOR ON THE BACK? YEAH, THAT'S A TYPE-F COAXIAL CONNECTOR...

USE THIS GIZMO TO CONNECT FROM YOUR NES RF OUTPUT TO THAT LITTLE SILVER SCREW. SET YOUR TV TO ANALOG CHANNEL 3 (OR 4 DEPENDING ON THE SWITCH ON THE CONSOLE) AND YOU'RE GOOD TO GO!