This is the Nikon FTZ Adapter (Type 1). It's an adapter that allows you to use a wide range of F-mount lenses with the Z6 and Z7. It works without any problems. The exterior is also in beautiful condition with no signs of use. ＜Important Notes＞ ・Those who can receive and rate the item within 3 days. ・Those who can fully confirm the product details. ※Please refrain from purchasing if you are looking for something in new condition, as this is a used item. ※Returns are accepted in case of malfunction or significant defects.