This item is spare part for the these David Clark Items:
H10-00, H10-20, H10-21, H10-26, H10-30, H10-36, H10-56, H10-56HX, H10-60, H10-60C, H10-60H, H10-60N, H10-66, H10-66N, H10-66X, 18283G-07, 18283G-08, 40411G-14, 40493G-01, 40493G-02, 40614G-07, 40