This listing is for a single (1) Peerless MTR-20 alnico tweeter, removed from a pair of Rectilinear Highboy speakers I am parting out. I have 2 available at the start of the listing. IF YOU WANT BOTH, CHECKOUT. THE COMBINED SHIPPING CHARGE WILL BE SHOWN ONCE YOU ENTER THE QTY. 2. Each tweeter was tested with music & a volt meter. Both sound great. Impedance is 8 ohms & DCR = 7.8 & 7.9.Cone diameter is 1 7/8". Frame diameter is 2 11/16". ...;Both tweeters do have traces of silicone, since this was how Rectilinear mounted the tweeters.