1. Made of high quality material, durable and useful. 2. Wrench tool, to help tighten those frustrating bolts. 3. Designed to work with 4-sided thumb screws to attach your camera to all mounts and accessories. 4. Suitable for Gopro Hero 4 / 3+ / 3 / 2 / 1 camera. 5. Small size, easy to carry.