Fotodiox Pro GoTough 20mm Extender - Black Aluminum Straight Extension Pivot Arm - for Sport Camera Gopro Hero Hd, Hero1, Hero2, Hero3, Hero3+, Hero4 and all GoPro Adapter Mounts Compatible with GoPro HD HERO 960, HERO1, HERO2, HERO3, HERO3+, HERO4 camera housing and screws Extends the camera 20mm without changing the direction it is facing Two-Point Pivot Arm, combine with other extension arms to add space, pivots and facing direction. Make your GoPro extend in different angles, can be used with any other adapters like gopro mount, helmet mount etc Permanent screw built into the extension arm, no more loosing that acorn nut! Aluminum pieces designed to hold up to extreme wear and tear 24 Month Manufacturer Warranty