Hybrid open ring, 180 mm
NSN 2925-00-402-5582
NSN 5935-01-309-4066
NSN 5950-00-760-8418
NSN 4140-01-380-9648
NSN 5910-00-724-0307
NSN 6620-01-093-7592
NSN 2925-00-519-0766
NSN 6645-01-605-4351
NSN 5998-00-949-9830
NSN 6620-00-557-7008
NSN 6620-00-147-6034
NSN 5965-01-502-3650