Buy from Amazon.com : http://fave.co/1NlxsXy <br /><br />B W 77mm ND 3.0-1000X with Single Coating (110)<br /><br />Product Description : <br />This filter uses our standard BW F-Pro filter mount which has a front accessory thread and is made of brass <br />Truly Neutral Gray design <br />Manufactured from Water-White Schott Glass
