Abstract: An apparatus includes a lifting device having a gas-attachment end and a lifting end, two pins each attachable to the gas-attachment end of the lifting device, and a gas-supply coupler for connecting a gas supply to the lifting device. Each pin has a longitudinal bore extending therethrough and an extending portion which extends beyond the gas-attachment end of the lifting device when the pins are attached thereto. One of the pins has an exterior annular notch on the extending portion. The gas-supply coupler is connectable to the two pins and has a locking element which releasably locks into the annular notch on the pin having the annular notch. The lifting device, the two pins, and the gas-supply coupler together have two passages leading from the gas-supply coupler, through the longitudinal bores of the two pins and to the lifting end of the lifting device. One passage is designed such that, when gas flows therethrough toward the lifting end, suction is created at the lifting end.