Keep your MOS UpLiftTM safe with the MOS Lock. Going on an adventure with peace of mind has never been easier than with the MOS Lock, a padlock designed to secure the MOS UpLiftTM to the crossbars of the roof rack. The MOS Lock, a sturdy stainless steel padlock, is specifically designed to be compatible with the MOS UpLiftTM. The U-shaped insert fits directly into slots on the base plate to allow for secure locking of the MOS UpLiftTM to the car's roof rack crossbars.