This joint can be used to connect two 0.75" carbon fiber tubes that can be quickly and easily adjusted angularly. Each connector side has indexed serations that provide lockable 15° increments. Range of movement varies from -105° to 105°. Joint comes with screw that can be adjusted with allen wrench, or you can purchase optional knob or lever handle for adjustment of angle without the use of a tool. Simply loosen joint, set new angle and re-tighten.