Features:This is a Protective Lens Replacement for Hero 9 Action Camera.Protects the interior lens of your Camera from dirt, dust and scratches.Easy to install , remove and replaceno tools needed.Alluminum Alloy frame and Optical Glass lens make it wear-resistant , anti-bump ,anti-collision.Flat design make no distortion while shooting under water. Specifications:Frame Material: Alluminum AlloyLens Material: Optical GlassWeight: Approx. 12 g/ ouncesSize: 55x32x32 mm/ 2.2x1.3x1.3 inches Compatible: for Hero 9 Action Camera Note:1.Please allow +/- 0-1g , +/- 1-3cm error due to manual measurement. pls make sure you do not mind before you order.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you3.Hero 9 Action Camera is not included. Package includes:1 x Protective Lens for Case