This part totally fit for Gopro action camera, extend the range of view by 100mm, improve your footage & help to create more contents.Recommended infill : 100% in PLA or ABSFor the best quality please print with 0.15-0.2mm thickness / layer.You need to add a M5 hexagon nut after finish printing. All my models are exported to high-poly setting. Your satisfaction is my happiness.

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