MaximalPower CA GP CNC Screw(BL) CNC Aluminum Thumb Knob Bolt Nut Screw Kit for GoPro Hero 4/3+/3/2/1, Pack of 3 (Blue) Amazon.com is the only authorized dealer selling MaximalPower brand products. Please make sure your item is ONLY sold and shipped by Amazon.com! All other marketplace vendors are selling counterfeit products that do not perform the same, and/or are not covered by our MaximalPower Warranty Billet Aluminum Thumbscrew, High quality stainless Steel Acorn Nut, High-Strength, more Strength than original plastic one. Direct replacement for GoPro Cameras, replace the plastic thumbscrew. Designed to tighten and loosen your camera more stronger and safely, Easy to mount Gopro Hero to standard tripod mount, suction cup or other gopro mount. Rubber O-Ring makes it nice and easy to tighten and loosen screws The colorful screw makes your gopro look cool and awesome. The long thumbscrew is used for connecting Gopro camera and Gopro accessories, short ones are used only for Gopro accessories.