Neewer Cell Phone Filter Kit Leica 9 3BL 8x is a

9 3BL 8x is a high quality neutral density filter with 3 stops of neutral density

has some minor radial haze and cleaning marks which shouldn't affect imaging (but they're there

The MF-4 back is film-tested for spacing and works well

and a little Manhattan of extended button-pusher switches on the back

Neewer Cell Phone Filter Kit Leica 9 3BL 8x is aA surprisingly decent filter kit that should fit most smartphones, consisting of a clamp on holder threaded for 67mm filters, plus a set of seven filters: a circular polarizer, four colour grad NDs, an ND filter, and a star filter and because the threading is a standard 67mm size, you can use it with any other appropriately sized filter. In excellent condition.