The 150mm Benro Master Filter Kit takes the guesswork out of using a filter holder by providing all the essential items you'll need to start shooting great photos right away - holder with compression ring, mounting ring, step-down ring, light tent, circular polarizer, solid ND filter, soft-edge graduated ND filter, filter wrench kit and carry bag. Fits Tamron SP 15-30mm F2.8Di VC USD lens.