Technics EAS-8P327A6 2.5" Mid/Tweeter PAIR, 4Ω.

These drivers use a treated (damped) 1/2 roll reverse surround with seamless paper cone and dust cap.  The voice coils measure approx .75", and the dust cap is 1" D.   Impedance is 4Ω.

The square basket measures 3.44" on a side, with a mounting cutout of 3.0" D.   Overall depth is 2.0". Mounting holes are approx .2" D, on 2.75" centers.   

Connectors are push on type, .11" and .20".

Full specifications were not available at the time of this posting.  Please do not hesitate to get in touch if you need additional information.