Description for 100x150mm frame.

* Increase the strength of the square lens and protect the lens from damage.

* Reduce the possibility of fingerprints smearing the lens, easy to disassemble.

* Suitable for all size 100*150*2.0mm square filters.

* Only applicable to K&F Concept Nano X Pro Series.

* Note: Repeated assembly is not recommended.

Description for 100x100mm frame

* Increase the strength of the square lens and protect the lens from damage.

* Reduce the possibility of fingerprints smearing the lens, easy to disassemble.

* Suitable for all size 100*100*2.0mm square filters.

* Only applicable to K&F Concept Nano X Pro Series.

* Note: Repeated assembly is not recommended.