Two-Speed 10:1 Focus Knob Mechanism for Explore Scientific and BRESSER 2.5-inch HEX Focusers - 625720

Explore Scientific

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Price: $99.99
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Price: $99.99

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Sometimes you need that precision focus adjustment, especially for high-power observing or for making images. The Two-Speed 10:1 Focus Knob Mechanism for the 2.5-inch HEX Focusers found on Explore FirstLight and select BRESSER Messier telescopes, provides a smooth course focus and a precision ultra-fine focus.


  • Precision all-metal construction with stainless-steel ball bearing for super-smooth action.
  • Attractive silver and black bead-blast finish.
  • Dual-Speed focusing mechanism with a 10:1 reduction ratio for course and ultra-fine focusing.
  • Weighs only 5.6 oz. (159 grams)

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