Features: Projector wall mounted or hanging double purpose bracket, enlarged support plate, thickened pipe diameter, and enlarged base. Solid aviation aluminum alloy base, more sturdy, metal knob, not easy to loosen. The PTZ supports 360 degree horizontal rotation and 90 degree vertical adjustment. The design is simple and elegant, with a delicate appearance. Not taking up space, suitable for multiple scenario. Specifications: Material: aluminum alloy Type: 18cm fixed length, 20-40cm, 30-60cm Length: up to about 18cm/7.09", 20-40cm/7.87-15.75", 30-60cm/11.81-23.62" Package Includes: 1Pc Projector Wall Mounted Hanging Bracket note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.