Zoom C-mount Glass Lens Adapter for Industry Microscope Camera Our microscope accessories are made of high-quality materials to durability and stability for long-term use. We have a wide range of microscopes, microscope cameras, microscope slides, microscope eyepiece lens, accessories and other related products. Working distance: 95mm zoom ratios: 6.5:1 Size: 168mm(L) x 50mm(DIA) Colour:black Material:Metal style:300X(Use magnification factor of 300X,Reduce working view,Increase magnification factor) Package Contents: 1 * Magnification C Mount Lens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.