Our short C Mount Adapter is an ultra low profile 1.25″ nosepiece to fit C and CS mount cameras into a 1.25″ focuser. It has a flange but only 8mm (1/3″) barrel length of Anodised Aluminium which is threaded for filters. This adapter can help attain focus with some telescopes, and is useful for varying F ratio when used with a 1.25″ screw in focal reducer.