DroneKinetics package of ND2,ND4,ND8,ND16 filters and polarizer for DJI Phantom3 Neutral density filters and polarizer for DJI Phantom3 Pro and Advance Package contains ND2, ND4, ND8, ND16 filters and a polarizer Filters are made out of shatter proof, flexible polymers and can be layered for added light control Lightweight filters would not impede operations of gimbal Precision crafted in the USA