Sturdy ConstructionThis projection stand is made of high quality aluminum alloy with anti-shake and thickened base, perfect for use in classrooms, conference rooms, hotels, home theaters, restaurants, or anywhere you need to install a projector. Package Included & Quality ServicePerfectisan will provide all accessories required for installation as well as the projector stand itself. The package includes different types of screws x 10; bolts x 4; wrench x 1; L-shaped socket x 1; installation instructions x 1; If you have any questions about this projector stand, please contact us as soon as possible if you encounter any problems during the purchase process, we will try our best to solve the problem for you in time.