The M54M-M48M-2-mm adapter converts M54x0.75 male threads to M48x0.75 male threads, adding precisely 2-mm of spacing for backfocus calibration. This spacer is ideal when coupling Player One filter drawers or OAGs to telescopes or cameras requiring M48 threads.
🔑 Key Features
- M54x0.75 male → M48x0.75 male
- Extension length: 2-mm
- CNC-machined Al6061-T6 for light rigidity
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