Part Number: 12507E16 (Ne) Part Number: 12507G-01 (Headset) Part Number: 12507G-04 (Headset,electrical h10-00) Part Number: 12507G-10 (Headset h10-30 d.cla) Part Number: 12507G-13 (Headset ea) Part Number: 12507G-14 (Headset) Part Number: 12507G-18 (David clark h10-40 headset) Part Number: 12507G-19 (Headset ea) Part Number: 12507G-20 (Headset) Part Number: 12507G-23 (Headset) Part Number: 12507G-25 (Headset model h10-80) Part Number: 12507G-29 (Headset) Part Number: 12507G31 (Head set) Part Number: 12507G-42 (Headset, standard aviation)