THIS IS A Brand New Aftermarket Replacement Diaphragm 8ohm

For JBL 2425J, 2426J, 2427J and 2420J Compression Driver 

Specs:

Overall Diaphragm Diameter: 2 15/16″ (74mm)

Voice Coil Diameter:  1 3/4″ (44mm

Mounting Holes: 2 1/4″ (57mm) Center To Center

Nominal Impedance:  16 ohms