Description The worlds thinnest and lightest 6 stop Graduated ND filter with tempered impact resistant glass.  The New Athabasca 6 stop Blade graduated ND filter features a unique SUPER THIN 1.1mm design that is impact resistant which is a world first for square filters.  Features: – Tempered glass offers impact resistance which is a world first that you will appreiciate. – Double sided coating on opticaly enhanced glass providing industry best features. – Nano Anti Reflective coating, providing incredible Scratch resistance realising an optically superior filter. – Stain and water resistant square filters that are easy to clean. Be assured that any water droplets from the environment will not affect  Athabasca coatings.              – Blade 6 stop GND filters provide an amazing low reflections and light reducing layer. – Thinnest and most lightweight 6 stop filters in the world weighing at only 39g for GND filters. Being so lightweight and durable means a greater experience in travel. You can take these with you and not have to worry about adding on much weight to your kit.