1. Made of corrosion-resistant aluminum alloy with hard anodized finish. 2. Lightweight, highly durable double ball design. 3. 67mm to 67mm threaded mount base is suitable for DSLR camera underwater housing. 4. It will protect the ports securely without rotating. Easily attach macro lens with 67mm threaded. 5. Ideal for shooting water-activities photos, or diving under water.
