Buy from Amazon.com : http://fave.co/1xIlxBz <br /><br />Formatt Hitech Limited HT85ND1.8 85x85MM (3.35-InchX3.35-Inch) Neutral Density 1.8 (6 Stops)<br /><br />Product Description : <br />Hitech filters are made from the highest quality 15mm optical resin <br />the filter is also available in 100mm 150mm and 165mm sizes <br />the 85mm size is useable with Hitech 85mm holder systems or any 85mm 335-InchSize holder
