Telescope tube rings must be precisely sized to fit. They are designed for a very narrow range, up to the specified inner diameter. Do not purchase rings if your telescope tube exceeds the listed size by even 1–2mm, as they will not fit.
Before ordering, carefully measure your own telescope tube rather than relying on third-party sources, as manufacturers may change specifications between production runs.
We do not maintain tube size or compatibility data and cannot recommend or confirm ring selections. Please ensure accuracy before purchasing.
