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This 2" Crayford Style Focuser from Explore Scientific is a dual-speed focuser that comes with the APO EDT series telescopes, and is sold here as a spare part or replacement.
It has two large, knurled 10:1 micro-focusing knobs, and on rough-focus knob. Tension adjustment allows you to lock or adjust the tension on the drawtube when you increase or decrease the weight of your accessories. An included 1.25" compression ring eyepiece adapter, a 2" eyepiece, or a barreled accessory is held in place with three set screws.
UPC: 812257013890