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 6610-01-529-0311
NSN 6220-01-428-8944
NSN 6105-00-015-9412
NSN 5996-00-462-2533
NSN 6240-01-603-0143
NSN 5930-01-056-5382
NSN 5835-01-186-4961
NSN 6135-00-461-3590
NSN 6320-01-240-4637
NSN 6685-01-592-4098
NSN 6610-00-433-8700
NSN 5960-01-076-4708