Specification Brand : Respicefinem BulletPoint1 : And Stable The Aluminum Alloy Is Machined, Providing Stability And Durability For Term Use BulletPoint2 : Lasting Performance The Machined Aluminum Alloy Stability And Durability, Making It Reliable Choice For Extensive Use. Microscope For Adults BulletPoint3 : 30. 5Mm Lens Lens Length The Lens Length Is 30. 5Mm, Easy To Use. It Unwanted Reflections And Increase Contrast BulletPoint4 : Easy To Use The 30. 5Mm Objective Lens Length And 160Mm Tube Length It Easy To Handle And Operate BulletPoint5 : Description:This Is 4X Achromatic Objective Lens For Biological Microscope. It Unwanted Reflections And Increase Contrast ItemName : Respicefinem Microscope for Adults 4X Achromatic Objective Lens 7. 0×4. 0×4. 0 4X 185 Biological Microscope Achromatic Objectives Lens 160 0. 17 4X Microscope Objective Achromatic ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 7 centimeters ItemPackageDimensions_Width : 4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : microscope-lenses Manufacturer : Respicefinem ModelName : Respicefinemh5emkdbnv0 ModelNumber : Respicefinemh5emkdbnv0 PartNumber : Respicefinemh5emkdbnv0 ProductDescription : Features: 1. Aluminum Alloy shell is precision machined, stable and for long time use. 2. This is a 4X achromatic objective lens for biological microscope. 3. It can eliminate unwanted reflections and increase contrast. 4. Offers high quality observation without additional chromatic aberration, make image more clear. 5. The Length of the objective lens is 30.5mm, easy to use.