Metal Snoot & Gel Filter Set & Honeycomb Grid for EINSTEIN Flash Guaranteed to 100% lock in Einstein Flash, Also fits Alien Bees, Balcar, White Lightning. Features O6 (6" diameter) interchangeable mount. Includes EINSTEIN Mount Includes 6mm (40) honeycomb grid and a 5 color gel filter set. Heavy duty construction, metal is 1.5mm thick.