Thank you for viewing. This is a mount adapter for using Leica M-mount lenses on Sony E-mount cameras. This adapter allows for a 6mm extension, longer than the 5mm extension of the standard adapter (LM-SE M (L)), significantly reducing the minimum focusing distance. I used this adapter with a Nokton 40mm on my a7ii. With a Leica M-mount lens alone, the minimum focusing distance is about 70cm, which is quite limiting. However, using the helicoid of this adapter allowed me to get much closer (I believe I could get as close as 16cm). Photos 5 and 6 were taken using this mount adapter to get close-up shots. The operation is solid, and I felt the same level of precision and smooth feel as with Cosina Voigtlander lenses. It's in good condition with no noticeable scratches, but please understand that it is a used item. *To prevent any issues, I will delete comments asking for price reductions. m(_ _)m Please feel free to ask any other questions you may have. Product Information SHOTEN LM-SE M II (Leica M-mount lens → Sony E-mount conversion) Mount Adapter with Helicoid New price on Amazon: 26,300 yen https://www.stkb.jp/smartphone/detail.html?id=000000001810&category_code=ct6&sort=recommend&page=1