1981 POLK AUDIO BRAND. FROM/FOR MODEL 10A (THEY MAY FIT MANY OTHER POLKS). PART NUMBER 75141481 (MAYBE THE MANUFACTURING DATE). 1" SOFT DOME TWEETER SPEAKER DRIVERS. SELLING 1 pair. GOOD CONDITION. 4.5" WIDE by 3.25" HIGH by 1.25" DEEP. SCREW HOLES 4" ACROSS. GASKETS & MOUNTING SCREWS INCLUDED. ONE (I BELIEVE) IS AN AFTERMARKET OEM FROM SIMPLY SPEAKERS. PART NUMBER T-K01010DT. 8 ohms. PLEASE BE AWARE SALES TAX MAYBE BE ADDED DEPENDING ON YOUR STATE'S POLICIES++ MADE IN USA. THEY WILL BE PACKED WELL. ++note USPS NOW HAS A $30.00 SURCHARGE FOR LARGER BOXES++I OFFER NO GUARANTEE OR WARRANTY OFFERED. SELLING AS IS. NO REFUND OFFERED. ++I WILL COMBINE SHIPPING WHEN RELEVANT++local pick-up available. IF DAMAGED IN SHIPPING BUYER MUST MAKE A CLAIM WITH THE SHIPPER.