4pcs Diaphragm For JBL 2446 2446H 2447 2447H 2445 2451J 2452H Aluminium 8Ohm

Overall Diaphragm Diameter: 5″ (127mm)

Voice Coil Diameter:  3.91″ (127mm)
Diaphragm Thickness:0.05mm
Diaphragm Height:18.4mm

Nominal Impedance:  8 ohms

Here is a list of the driver part #’s:
2446J, 2447J, 2450J, 2451J, 2452J (will not fit this model with spring terminals) and more.