Designed to be compatible with GoPro cameras right out of the box. Just clip it on, and start shooting. Dual ball-joints allows for 360° of rotation and 180° of tilt at both ends. Ingeniously simple friction knobs give you total control: loosen them up to make big scene changes quickly, or tighten them down to make ultra fine adjustments. Our world-renowned engineering-grade nylon, complimented by stainless steel hardware, gives the 134 unmatched resistance to the elements, including fresh water, salt water and UV exposure from the sun. Includes, post, track and rail mount-⅞-1¼” • Compatible with GoPro and other action cameras • Dual ball-joints provide infinite flexibility for positioning • Post Mount fits all Scotty post mounting options • Easy Grip T Knob