Hybrid open ring, 210 mm
NSN 5930-01-091-4262
NSN 5998-01-005-0310
NSN 6240-01-252-9374
NSN 5855-00-177-3529
NSN 7035-01-437-4137
NSN 5920-01-370-4376
NSN 6150-01-357-6223
NSN 6150-00-066-2261
NSN 5915-00-365-9951
NSN 5855-01-364-9810
NSN 7035-01-255-0334
NSN 6685-01-551-1293