Amazon.com : Haida Ultimate Long Exposure Set 77mm / 82mm Slim PROII Neutral Density MC ND Filter Kit ND8 ND64 ND1000 + Step Ring + Tortoise Case HD4547-82 : Electronics
K&F Concept 77mm Lens Filter Kit Neutral Density ND4+UV+Circular Polarizing (CPL) Lens Filter with Cleaning Pen & Filter Pouch for DSLR Cameras