Suitable for new lights:
7W Neo 700 Lumen, 15W Piko 1500 Lumen (with and without Bluetooth), 28W Wilma 3200 Lumen (with and without Bluetooth)
Suitable for older lights:
Piko (through 1200 Lumen)
All GoPro adapters are made of a solid piece of aluminium with a nice black anodized finish.