This is the NIKON DR-6 Angle Finder for corner windows. Please confirm compatibility with your camera model. I purchased this as a spare and have not used it. I have tested its operation and found no problems. However, there may be some deterioration due to aging. Please understand that this item is sold as-is. Please check the images for the condition. Please note that it may take about a week to ship. It will be shipped via "Yu-Packet 60".