Kase Armour Magnetic Reverse Grad ND 0.9 3-Stop 100x150mm Filter with Frame

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Designed exclusively for the Kase Armour 100mm Filter System, the Reverse Grad ND 0.9 is a 3-stop filter that attaches magnetically to the Armour filter holder by way of the included magnetic frame. The shockproof glass features waterproof, oil proof, and dust proof nano coatings and is mounted in a light weight aluminum alloy frame.