Railmaster DHB27-8, High Bass Speaker DHB27-8: 8 ohm, 2 watt, 27mm x 14.3mm(1.06” x 0.56”). Frequency range 200 - 20,000 Hz. MSRP; $7.50Railmaster DHB27-8, High Bass SpeakerSKU: RMH-DHB27-8$6.00PriceCALL TO ORDER