Features: Made of metal (not plastic) It moves the lens farther from the film or digital sensor. The farther away the lens is, the closer the focus, the greater the magnification Suitable for all Nikon Camera. Package Included: 1 x Camera body mount adapter 1 x Lens mount adapter 1 x 9mm tube (Tube 1) 1 x 16mm tube (Tube 2) 1 x 30mm tube (Tube 3)