Specs:

Overall Diameter:  5″ (127 mm)

Voice Coil Diameter:  3″ (76.2 mm) Edgewound

Voice coil Materials :Alumnium 

Diaphragm Material: Titanium

Diaphragm Height: 15.2 mm

Nominal Impedance: 16 ohms

2pc with 2 gasket

Here is a list of the driver part #’s:

89796XX (use 81256XX), 0301251102, 301251001, DH1, DH1A, DH-1A, DH1AMT, DH1A-WP, DH1A-WPX, DH1012, DH-1012, DH1202, 89796 (use 81256XX), DH2012, DH-2012, N/DYM-1, N/DYM1MT, N/DYM1-0MT, ND6X-8, DML-1122APF, DML-1152APF, DML-1152MC, EJ1, EJ1X, FS-212, FS-212AC, TS550D-LX, TS940D, TS940D-LX, TS940S, TS9040D, TS9040D-LX, VARIPLEX B, F01U110542

2pcs