Features: 100% brand new and high-quality. It is made of premium material,durable and has long service life. It is stable and has great performance while using. It can hold the microscopic lens tightly and steady. You can discretionarily change the focal length through the bracket. Specification: Working Stroke: 50mm/1.97in Lens body Aperture: 76mm/2.99in Column Diameter: 32mm/1.26in Center Distance: 155mm/6.1in Package List: 1*Stereo Microscope Focus Bracket Note: As different computers display colors differently, the color of the actual item may vary slightly from the above images. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1100% brand new and high-quality. 2It is made of premium material,durable and has long service life. 3It is stable and has great performance while using. 4It can hold the microscopic lens tightly and steady. 5You can discretionarily change the focal length through the bracket.