The tri-prong system this mount used is compatible with GoPro, so should you need to swap out your light for your GoPro it's a quick and easy action. This mount is designed to fit most vented helmets, and works with the Knog PWR Charge and Modular lights (excluding the PWR Mountain). The T Slot mount included is for use with the PWR Modular lights, and allows for an especially quick release.
• Mounting: Fits most vented bike helmets and is GoPro compatible
• Weight: 20g