PANNOVO G-84 Universal Aluminum Alloy Tightening Knob Bolt Wrench for GoPro Hero 4/2/3/3+/SJ4000 - Orange
It will help you to secure your GoPro camera; A lot tighter than trying to tighten it by hand. Works especially well when trying to install the camera with multiple extensions and more force needed to tightening the knobs. Works with all standard GoPro mounting knobs and Hero Gear knobs.