JBL Factory Replacement Driver 2412H, 125-10000-00X This isa complete brand new factory JBL2412H driver, part # 125-10000-00X 1-3/8 thread on Size: 3-3/8"(86mm)wide x 2-1/8" (54mm) tall Impedance: 8 ohm, DCR:4.2 ohm We also replacement diaphragms for this model.