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The Robtics 2 inch to 1.25 inch adapter allows you to use 31.75mm (1¼ inch) accessories in a 2 inch sized focuser. The 2-inch side has an internal thread into which standard 2-inch filters can be screwed. The 1¼ inch insert side has an internal brass compression ring in stead of a thumb screw to prevent damage to your accessories. Robtics also supplies a higher model adapter.
Specifications