SKYOPTIKST 1.25 inch Telescope Focuser for Refractor Astronomical Telescope - -with M42 Female Thread -All-Metal Casting

SKYOPTIKST Rack and Pinion Focuser for refractor telescope with 1.25 inch eyepiece interface All metal focusing handwheel; You can adjust the focal length by the gear; Focuser Travel is 65mm; Brass ring design; Internal brass ring that the set screw hits to hold your 1.25inches eyepiece inside for eliminates marks on your eyepiece barrel Inner wall extinction treatment; the inside of the item fully threaded to minimize reflections;Surface oxidation black treatment，Prevent equipment from rusting Come with 1.25 inch dust cover; It can protect your equipment from dust; Thereby extending the service life of the equipment