This listing is for a single (1) vintage Yamaha NS-99TW 1" dome tweeter, removed from a NS-A99W speaker I have parted out. It has been tested with music & a multi meter & is in good working condition. There are marks on the face plate & the coating on the dome has turned brown like they all do on these.  Impedance is 8 ohms & DCR = 6.7. I only have 1 available.