1.68mm f/1.8 125d HFOV GP16818CS (No Distortion) L5W4H2 97mm is the perfect replacement

97mm is the perfect replacement to the stock GoPro®

(1) Clip-to-Mount Joint

71g (When Using Two Dual Clips) Material Black Paintable SLS Nylon Plastic

(2) Stainless Steel Bolts and Wingnuts

1.68mm f/1.8 125d HFOV GP16818CS (No Distortion) L5W4H2 97mm is the perfect replacementThis is a SUPER wide angle CS mount lens that has some internal optics that create no barrel distortion for the resulting image (flat horizons,no fisheye). These optics invert the image vertically so make sure to flip the capture image in the GoPro Camera Settings. Specifications: Model Number GP16818CS Manufacturer Part Number SY110M Focal Length 1. 68mm Fish eye Distortion NO (Barrel Distortion Corrected Inside Lens) Black Vignetting NO Weight