CONTAX Carl Zeiss G Biogon T* 21mm F/2.8 convert to Leica M Helicoid. This is solid aluminum anodized color. Everything the same as black one only color different. Sales only the silver color tube with rear cap, lens and camera for display only.

You may use this G21 helicoid to convert your lens to Leica m with RF coupled, also you may return it back to original G Mount easily. I had list a DIY video shows how to do it on YouTube, you may searching Contax G28 lens convert to Leica M.

I sold only helicoid tube only as photo 1-3, contain a rubber ring to open the lens, and 0.1 0.2 0.3 shims to adjust lens focus to infinity . Other Photos 4-12 with cameras and lenses or lens element are not including in the sales. If you had any question about how to do it, please ask me.

This item will ship out from Taiwan. Used register mail or EMS

,depend on your ares.