Features: brand new and high quality CS C-RMS Adapter Ring Objective Lens Adapter RMS to C CS Thread C-Mount for Industrial USB CCD Camera Connect with Microscope RMS Objective Lens Macro Photography Specification Item style: Objective Lens Adapter Ring Inner Thread: RMS M20.2*0.705 (fit RMS microscope objective lens) Application This adapter ring can connect your objective lens with your C-mount USB or CCD camera, then you can take photo from objective lens directly. Package Included 1x RMS-C adapter ring Attention Only the adapter ring included,NOTincluding the objective lens and the camera. Two styles will be shipped at random. Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!