"FABRICATED OF STEEL CONFORMING TO ASTM A148-65,CLASS 105-85,LUGS ONCONNECTORS SECURELY ENGAGE THE INSIDE FACE OF CORNER CASTINGS,AND THECONNECTOR ACTS AS A SPACER BETWEEN CONTAINERS TO MAINTAIN THE O/A LG OF THECOMBINED NO. OF UNITS,WILL HANDLE 2 TEN FT OR 2 TWENTY FT CONTAINERS TOFORM A SINGLE RIGID UNIT FOR HANDLING BY CONVENTIONAL LIFTING DEVICES,ASIMPLE SOCKET WRENCH IS USED TO EXPAND AND CONTRACT THE CONNECTOR,FOR USEW/MULTIPURPOSE EQUIPMENT SHELTER"