10x M5 Knurled Thumb Screw High Step Slotted Head Hand Tighten M5 Bolt Thumbscrew Adapter Mount For Gopro Hero 10 9 8 6 5 Camera - Sports & Action Video Cameras Accessories - AliExpress
GoTough Long 45mm Black Metal Thumbscrew for GoPro Cameras – Fotodiox, Inc. USA