Feature: 1. This adjustment bracket is made of high quality metal material, and has long service life. 2. The focusing bracket with ball bearing and support for coaxial coarse adjustment and fine adjustment. 3. 0.002mm fine focusing, it features high preciseness and high reliability, convenient to use. 4. The exquisite rotating knob makes the adjustment easier and the more convenient. 5. The industrial stereoscopic microscope adjustment bracket is easy to install and is a practical accessory. Specification: Condition: Brand New Item Type: Microscope Adjusting Bracket Material: Metal Ring Fixed Microscope Lens Diameter: Approx. 50mm / 2in Column Opening Diameter: Approx. 25mm / 1in First-order Fine Focusing: 0.002mm 360 Degree Rotation Thickness: Approx. 37.7mm / 1.5in Set Microscope: Suitable for zoom stereoscopic microscope Package List: 1 x Bracket