rand new (two) 2 way passive crossovers. These are very high quality crossovers and can be used to block out the bass from entering your tweeters and/or speakers. Specifications on Packaging: 2 Audiopipe 4 ohm crossovers Gold Plated Screw Terminals 150 Watts RMS/300 Watts Peak High Grade Polymer Capacitors Ferrite and Air cooled Spools Woofer Frequency: 20 ~ 4.3KHz Tweeter Frequency: 3.39 ~ 20kHz 12dB per Octave Slop (4Ω) Enclosed ABS Cabinet Dimensions - 4 inches by 2 1/2 inches