Smatree&reg; Aluminum Arm- Helmet Extension Mount and Surf Mount or Suction Cup,Bike ,Motorcycle Extension Mount Thumbscrew/ Thumb Screw Knob Bolt for GoPro HERO4 HERO3+ Hero3 2 1 Cameras (Blue) Attaches directly to GoPro HERO Cameras, such as Gopro HD Hero2 and Hero3,Hero3+, Hero4 Capturing a new extension and wide view of perspective 100% Waterproof,compact design.Package: 3 x blue aluminum screws , 5 x mechined aluminum arms Extends any GoPro&reg; or GoPole&reg; Mount,Surf Mount or Suction Cup Mount,motorcycle and other sport mount Attaches to helmet mount for 320&deg; POV shots, Attaches two or more cameras by adjusting proper position and angle Made of high quality aluminum material, High-Strength,High compression, replace the original plastic arm along with the Gopro