Description: Features: brand new and high quality for: For Hero 6/5/7 action camera The dome pushes the water line away from the lens, the field of view is increased, above and below the water line, it gives you very cool pictures. The water magnifies things. This distorts the look of the photos, making the above water objects look normal while the underwater objects look larger. With the dome port, it normalizes the field of the views, it matches above and below the water line, which gives you a real world. The use of a semi-hemispherical dome eliminates the perpendicular angle between the backing plate and the dome.The benefits of this are the elimination of circular reflection and improved water sheeting while reducing the form factor and maintaining full front face surface area. Specification: Material: Acrylic, ABS Diameter: 16cm(6.30in)(approx) Color: As pictures shown. Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Dome Port 1 x Pistol Trigger 1 x Floating Hand Grip 1 x Long Screw 1 x Wrist Strap