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 !#!amp!*! nut assembly with this high-strength， super lightweight aluminum bolt nut screw for your Gopro Hero 2 / 3 now!                                    Features            New aluminum thumb knob with stainless bolt nut screw for Gopro mount adapterMade of tempered grade 6061-T6 aluminum， durable for long term useEasy to install and useDirect replacement for Gopro Hero 2 / 3Accessories for fixed Gopro to a standard tripod， suction cupCome as set (1 long， 2 short)                                                             Specifications            Weight    2.19 oz /62 g    <br>Dimensions    (0.71 x 2.32)" / (1.8 x 5.9) cm (Dia. x L)    <br>Material    Aluminum    <br>Color    Blue    <br>                                                            Package Includes            3x Aluminum Thumb Knob Stainless Bolt Nut Screw