This is a pair of rings for a 120mm refractor telescope. Actual inner diameter of tube ring is 120mm. 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.
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