Features: Each of Freewell 4K Series optics are handcrafted precisely compatible to be used with MINI 2 for mavic filter. Freewell GimbalSafe technology ensures each filter frame goes through a rigorous lightweight test putting no negative effect on your osmo pocket gimbal. Waterproof, dustproof, scratch-resistant, oilproof, color neutral coating makes sure you get the best possible for image while shooting outdoor. The filter can be adjusted freely by rotating to choose the most suitable light. Two types are available: 4 Pack/6 Pack. Specifications: Material: Aluminum Alloy + Optical Glass Dimension: approx.4 Pack of 68x68x20mm/2.67x2.67x0.78inches 6 Pack of 98x80x20mm/3.85x3.14x0.78inches Net Weight: Approx.50g Package Includes: 1 Set Filter Kit （4 Pack/6 Pack） note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.