Description: Useful accessories allows you to attach forCanon EOSM EF-M mirrorless camera to the 0.91inch/23.2mm eyepiece diameter microscopes. Connect cameras to some certain types of microscope. With T-ring, you can use M42 Lenses on camera. All metal construction and anodizing aluminium process, durable for long time use. This adapter will work with for any Canon EOSM camera body.Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. Specification: Material: Metal Color: Black Length:75mm Mount Diameter: 23.2mm / 0.91inch Inner Thread:M48*0.75mm Outer Thread:M42*0.75mm Application: for Microscope and Camera Package Includes: 1 Piece 23.2mm Microscope Mount 1 Piece DSLR Camera Adaptor T-Ring for Canon EOSM