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 6650-00-432-2358
NSN 5945-00-925-3773
NSN 5999-01-459-9409
NSN 5990-01-024-9659
NSN 5905-00-151-6653
NSN 5996-01-445-5528
NSN 6650-00-292-9106
NSN 6135-01-388-2581
NSN 5915-01-363-3850
NSN 6130-01-629-7839
NSN 5975-01-492-7035
NSN 5985-01-010-3398