Blantex Bunk Adaptors for 1.5-Inch Round Military Bed ADAPTOR SET FOR MIL125SQ3975 BUNKABLE BEDS Set of 4 bunk adapters to turn 2 military square tube beds into bunks BROWN EPOXY POWDER COTAED BLA-MIL-ADAPTOR Set of 4 bunk adapters to turn 2 military round tube beds into bunks Heavy Duty Steel. Painted grey This is what the U.S. Military Uses