Navy offset extension tube, part of climbing protection system used on permanent type ladders, material is stainless steel type 316, 0.120 inches thick
NSN 5930-01-054-9507
NSN 5930-00-343-0603
NSN 5996-01-354-6161
NSN 6620-01-225-3245
NSN 5935-01-446-2372
NSN 7035-00-541-8516
NSN 5895-00-188-8156
NSN 6110-01-644-6554
NSN 5945-01-267-9734
NSN 7035-01-494-1161
NSN 6645-01-310-7348
NSN 6610-01-179-0116