SVBONY 1.25" Double Helical Focuser High Precision for Telescope / Finder & Guidescope w/ Brass Compression Ring

Main Feature 1 SVBONY Brand New Double Helical Focuser2 High Precision double helical focuser for guider scope finder scope Interface3 The solution for telescopes or telephoto lenses with sluggish focusing4 Item was made by Full metal durableProduct parameters Inner diameter 1 25 Stroke 10mmAdjustment Accuracy 0 05mmTop Male Thread M42x0 75Bottom Male Thread M31 0 5Minimum Height 43mmLongest Height 53mmPackage Includes SVBNOY 1 25 High Precision Double Helical Focuser