6.6X6.6 WW IR ND 3.0 - W6666IRND30
6.6X6.6 WW IR ND 2.1 - W6666IRND21
6.6X6.6 WW IR ND 0.90 - W6666IRND9
6.6X6.6 WW IR ND 0.60 - W6666IRND6
6.6X6.6 WW IR ND 1.5 - W6666IRND15
6.6X6.6 WW IR ND 1.2 - W6666IRND12