Hybrid open ring, 180 mm
NSN 5835-01-552-8365
NSN 5895-00-905-7178
NSN 6610-00-149-1534
NSN 5965-01-470-8807
NSN 5945-01-615-4983
NSN 5915-01-087-1776
NSN 5945-00-701-7612
NSN 5835-00-018-4571
NSN 5935-01-096-5221
NSN 6240-01-364-8254
NSN 5895-00-236-3294
NSN 5975-01-386-3061