M54オス→2インチノーズピース（内穴2インチフィルターねじ付き）アダプター

Threads mated cleanly on the first try, no cross-threading or wobble at all. The 35mm nosepiece length gives me just enough back focus room, and the inner 2” filter thread let me keep my light pollution filter in the train. Solid little adapter for the price.

Screwed this onto my M54 camera side and the 2" filter thread inside lets me keep my light pollution filter right in the adapter. Threads felt clean going on, no cross-threading. Saves me from stacking extra pieces in the imaging train.

The 35mm nosepiece length gives me just enough back focus for my reducer, and the inner 2” filter thread is a nice bonus. Everything threads on smoothly with no play—solid build for the price.