The Lift is what shall be holding the model while it is being built. This assembly is attached to the Motion Assembly, described in the previous instructions. You shall have few options when completing this assembly so read the instructions carefully to find out what these options are. This part of the Kit includes the Black 5mm Glass that is used to secure the model and all the remaining nuts and bolts along with the parts for the installation. If you find into any sort of problems or have questions about this assembly, don't hesitate to ask through the Forum or by contacting us.