This part totally fit for Gopro action camera, has the internal 1/4 threads that connects to your tripod perfectly.Recommended infill : 100% in PLA or ABS. You just need to add one M5 hexagon nut after finish printing.For the best quality please print with 0.15-0.2mm thickness / layer. All my models are exported to high-poly setting. Your satisfaction is my happiness. Thank you for your support.