Sky-Watcher 182mm Tube Ring Set

For 150mm Skywatcher Newtonian Telescope Tubes Actual inner diameter of tube rings is 182mm. These quality cast aluminium rings are custom-made for use with either the AZ3, EQ1, EQ2, EQ3-2, EQ4, EQ5, HEQ5 and EQ6 (incl. PRO)  mounts/mounting plates.  Rings of the following internal diameters are available: 90mm, 102mm, 120mm, 130mm, 140mm, 150mm, 160mm, 182mm, 236mm & 285mm. They are felt-lined and hinged for easy installation of the telescope. By loosening the thumbscrews, the telescope can be easily balanced and rotated.