The Aluminum Thumb Knob Stainless Bolt Nut Screw for Gopro Hero 2 / 3 is designed to tighten and loosen your camera more stronger and safely, which are precision machined out of 6061 aircraft aluminum and durable for long term use. They are the anodized aluminum knob to replace the plastic factory Gopro knob. Replace your bolt & nut assembly with this high-strength, super lightweight aluminum bolt nut screw for your Gopro Hero 2 / 3 now! Features: 1.Durable and lightweight accessory set. 2.The thumb knob is precision made of high quality aluminum. 3.The bolt nut screw fully adopts high quality stainless steel material. 4.Easy to mount Gopro Hero to standard tripod or suction cup. 5.Compatibility: Gopro HD Hero 2/3 Camera 6.Color: Blue. 7.Net weight: 0.04kg 8.Gross weight: 0.06kg Package Includes: 1* Screw set (1 long 2 short)