outside tube diameter 20.0 millimeters
NSN 5990-01-211-6136
NSN 5925-01-111-0155
NSN 6320-01-162-5977
NSN 7035-01-202-8172
NSN 5996-01-276-2763
NSN 5998-01-480-7391
NSN 5998-01-100-3496
NSN 5910-00-340-1802
NSN 5935-00-350-8698
NSN 5950-00-821-7838
NSN 5990-01-352-5255
NSN 5975-01-544-4394