The "1146" refers to the specific volume or scene number in their extensive catalog. While individual scene details can vary, videos in this specific series typically feature:
Modern digital releases are usually in .mp4 or .mkv format.
High-definition video with a focus on detailed close-ups and the aesthetic of the "shibari" style.
If you are looking for a specific scene description, these titles are often indexed on specialized databases like the G-Area official site (which requires age verification) or niche archiving forums.