This part is a replacement or spare front lens cap to protect the SMC-1, CMC-1, and CMC-2 wet-mate lenses.
Not compatible with the SMC-2. That correct part can be found here.
Compatible with:
- Nauticam Super Macro Convertor 1 (SMC-1, 2.3x Magnification) SKU: 81201
- Nauticam Compact Macro Convertor 1 (CMC-1, 4.5x Magnification) SKU: 81301
- Nauticam Compact Macro Convertor 2 (CMC-2, 2.8x Magnification) SKU: 81302