STS-135 Cargo Bay Manifest
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                                   Mass
 External Airlock/ODS            1800? kg
 EMU spacesuits 3015, 3006        260?
 RMS arm 301                      410?
 Orbiter Boom Sensor System       382?
 MPLM-2 Rafaello                11556
 SPDU                              17?
 ROEU 755 umbilical for MPLM       78?
 LMC:
  Lightweight MPESS Carrier      1050?
  Robotic Refuelling Mission      300?
 Picosat Launcher                  22
  PSSC satellite                    4
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 Total                          16554 kg