Overview:

Material: Made of aviation aluminum by CNC-body processing, the surface is black sandblasted.
The connection between the aluminum holder and the camera lens is front side, the overall structure is arc-shaped, and the protruding portions on both sides are clips.
There are 8 filter ring adapters, included 49mm/52mm/ 58mm/ 62mm/67mm/ 72mm/ 77mm/ 82mm, allows you use the nd filter on your kinds of size camera lens.
Suitable lens: fits for wide angle lens with focal length bigger than 18mm.
Suitable filter size: This filter holder can only for filter with a width of 100mm and a thickness of 2mm,and could hold 2 filters.
Allows up to two 100mm-wide, 2mm-thick filters to be used.
Support 2 square filters stacked.
No dark corners on lenses at 14mm